Document and Entity Information Document (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Feb. 13, 2015	Jun. 30, 2014
Entity Information [Line Items]
Entity Registrant Name	TRIMAS CORP
Entity Central Index Key	0000842633
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2014
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock, Shares Outstanding		45,279,911
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,698.4

Consolidated Balance Sheet Statement (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current liabilities:
Current maturities, long-term debt	$ 23,860	$ 10,290
Accounts payable	185,010	166,090
Accrued liabilities	101,050	85,130
Total current liabilities	309,920	261,510
Long-term debt	615,470	295,450
Deferred income taxes	55,290	64,940
Other long-term liabilities	90,440	99,990
Total liabilities	1,071,120	721,890
Redeemable noncontrolling interest	0	29,480
Preferred stock $0.01 par: Authorized 100,000,000 shares; Issued and outstanding: None	0	0
Common stock, $0.01 par: Authorized 400,000,000 shares; Issued and outstanding: 45,003,214 shares at December 31, 2013 and 39,375,790 shares at December 31, 2012	450	450
Paid-in capital	806,810	816,450
Accumulated deficit	(226,850)	(295,320)
Accumulated Other Comprehensive Income (Loss), Net of Tax	10,220	27,830
Total shareholders' equity	590,630	549,410
Total liabilities and shareholders' equity	1,661,750	1,300,780
Current assets:
Cash and cash equivalents	24,420	27,000
Receivables, net	196,320	180,210
Inventories	294,630	270,690
Deferred income taxes	28,870	18,340
Prepaid expenses and other current assets	14,380	18,770
Total current assets	558,620	515,010
Property and equipment, net	232,650	206,150
Goodwill	466,660	309,660
Other intangibles, net	363,930	219,530
Other assets	39,890	50,430
Total assets	$ 1,661,750	$ 1,300,780

Consolidated Balance Sheet Parentheticals (USD $)	Dec. 31, 2014	Dec. 31, 2013
Consolidated Balance Sheet Parenthetical [Abstract]
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	100,000,000	100,000,000
Preferred Stock, Shares Issued	0	0
Preferred Stock, Shares Outstanding	0	0
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	400,000,000	400,000,000
Common Stock, Shares, Issued	45,280,385	45,003,214
Common Stock, Shares, Outstanding	45,280,385	45,003,214

Consolidated Statement of Income Statement (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Statement [Abstract]
Net sales	$ 1,499,080	$ 1,388,600	$ 1,267,510
Cost of sales	(1,114,140)	(1,037,540)	(925,090)
Gross profit	384,940	351,060	342,420
Selling, general and administrative expenses	(255,880)	(243,230)	(214,630)
Net gain (loss) on dispositions of property and equipment	(4,510)	11,770	280
Operating profit	124,550	119,600	128,070
Other expense, net:
Interest expense	(15,020)	(18,330)	(35,800)
Debt extinguishment costs	(3,360)	(2,460)	(46,810)
Other expense, net	(6,570)	(1,720)	(2,970)
Other expense, net	(24,950)	(22,510)	(85,580)
Income from continuing operations before income tax expense	99,600	97,090	42,490
Income tax expense	(32,870)	(18,140)	(6,060)
Income from continuing operations	66,730	78,950	36,430
Income from discontinued operations, net of income taxes	2,550	1,120	(140)
Net income	69,280	80,070	36,290
Net income attributable to noncontrolling interest	810	4,520	2,410
Net income attributable to TriMas Corporation	$ 68,470	$ 75,550	$ 33,880
Basic earnings per share attributable to TriMas Corporation:
Continuing operations	$ 1.47	$ 1.82	$ 0.90
Discontinued operations	$ 0.06	$ 0.03	$ 0.00
Net income per share	$ 1.53	$ 1.85	$ 0.90
Weighted average common shares—basic	44,881,925	40,926,257	37,520,935
Diluted earnings per share attributable to TriMas Corporation:
Continuing operations	$ 1.46	$ 1.80	$ 0.89
Discontinued operations	$ 0.05	$ 0.03	$ 0.00
Net income per share	$ 1.51	$ 1.83	$ 0.89
Weighted average common shares—diluted	45,269,409	41,395,706	37,949,021

Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income	$ 69,280	$ 80,070	$ 36,290
Other comprehensive income
Defined pension and postretirement pension plans, net of tax	(3,340)	1,600	(2,570)
Foreign currency translation	(13,820)	(15,770)	3,930
Net changes in unrealized gain (loss) on derivative instruments, net of tax	(450)	2,740	(1,680)
Other Comprehensive Income (Loss), Net of Tax	(17,610)	(11,430)	(320)
Total comprehensive income	51,670	68,640	35,970
Net income attributable to noncontrolling interest	810	4,520	2,410
Total comprehensive income attributable to TriMas Corporation	$ 50,860	$ 64,120	$ 33,560

Consolidated Statement of Comprehensive Income Parentheticals (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Consolidated Statement of Comprehensive Income
Defined pension and postretirement pension plans, tax	$ 1.7	$ 1.5	$ 1.1
Net changes in unrealized gain (loss) on derivative instruments, tax	$ 0.2	$ 1.7	$ 1.0

Consolidated Statement of Cash Flows Statement (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cash Flows from Operating Activities:
Net income	$ 69,280	$ 80,070	$ 36,290
Adjustments to reconcile net income to net cash provided by operating activities, net of acquisition impact:
Gain on dispositions of businesses and other assets	(2,250)	(11,770)	(280)
Gain on bargain purchase	0	(2,880)	0
Depreciation	32,770	30,810	25,050
Amortization of intangible assets	23,710	19,770	19,820
Amortization of debt issue costs	1,940	1,780	2,490
Deferred income taxes	(8,620)	(8,800)	(8,330)
Non-cash compensation expense	7,440	9,200	9,280
Excess tax benefits from stock based compensation	(1,180)	(1,550)	(2,730)
Debt financing and extinguishment expenses	3,360	2,460	46,810
Increase in receivables	(13,290)	(25,580)	(3,800)
Increase in inventories	(7,510)	(10,690)	(48,010)
(Increase) decrease in prepaid expenses and other assets	5,410	(2,380)	620
Increase (decrease) in accounts payable and accrued liabilities	14,050	7,800	(3,700)
Other, net	(1,710)	(630)	(290)
Net cash provided by operating activities, net of acquisition impact	123,400	87,610	73,220
Cash Flows from Investing Activities:
Capital expenditures	(34,450)	(39,490)	(46,120)
Acquisition of businesses, net of cash acquired	(382,880)	(105,790)	(89,880)
Net proceeds from disposition of businesses and other assets	7,240	14,940	3,000
Net cash used for investing activities	(410,090)	(130,340)	(133,000)
Cash Flows from Financing Activities:
Proceeds from sale of common stock in connection with the Company's equity offering, net of issuance costs	0	174,670	79,040
Proceeds from borrowings on term loan facilities	446,420	359,470	584,670
Repayments of borrowings on term loan facilities	(180,810)	(587,500)	(404,770)
Proceeds from borrowings on revolving credit and accounts receivable facilities	1,068,100	1,222,980	724,500
Repayments of borrowings on revolving credit and accounts receivable facilities	(993,090)	(1,113,910)	(706,500)
Repurchase of senior secured notes	0	0	(250,000)
Senior secured notes redemption premium and debt financing fees	(3,840)	(3,610)	(42,150)
Distributions to noncontrolling interests	(580)	(2,710)	(1,260)
Payments to Noncontrolling Interests	(51,000)	0	0
Proceeds from contingent consideration related to disposition of businesses	0	1,030	0
Shares surrendered upon vesting of options and restricted stock awards to cover tax obligations	(2,910)	(4,440)	(990)
Proceeds from exercise of stock options	640	1,620	6,170
Excess tax benefits from stock based compensation	1,180	1,550	2,730
Net cash provided by (used for) financing activities	284,110	49,150	(8,560)
Increase (decrease) for the year	(2,580)	6,420	(68,340)
At beginning of year	27,000	20,580	88,920
At end of year	24,420	27,000	20,580
Supplemental disclosure of cash flow information:
Cash paid for interest	10,870	16,750	31,300
Cash paid for income taxes	$ 41,110	$ 37,700	$ 25,820

Consolidated Statement of Shareholders' Equity Statement (USD $) In Thousands	Total	Common Stock [Member]	Paid-in Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive Income [Member]
Balances at Dec. 31, 2011	$ 173,790	$ 350	$ 538,610	$ (404,750)	$ 39,580
Net income attributable to TriMas Corporation	33,880			33,880
Other comprehensive income (loss)	(320)				(320)
Proceeds from sale of common stock	79,040	40	79,000
Shares surrendered upon vesting of options and restricted stock awards to cover tax obligations	(990)		(990)
Stock option exercises and restricted stock vesting	6,170		6,170
Excess tax benefits from stock based compensation	2,730		2,730
Non-cash compensation expense	9,280		9,280
Balances at Dec. 31, 2012	303,580	390	634,800	(370,870)	39,260
Net income attributable to TriMas Corporation	75,550			75,550
Other comprehensive income (loss)	(11,430)				(11,430)
Proceeds from sale of common stock	174,670	50	174,620
Shares surrendered upon vesting of options and restricted stock awards to cover tax obligations	(4,440)		(4,440)
Stock option exercises and restricted stock vesting	1,620	10	1,610
Excess tax benefits from stock based compensation	1,550		1,550
Non-cash compensation expense	9,200		9,200
Noncontrolling Interest, Change in Redemption Value	(890)		(890)
Balances at Dec. 31, 2013	549,410	450	816,450	(295,320)	27,830
Net income attributable to TriMas Corporation	68,470			68,470
Other comprehensive income (loss)	(17,610)				(17,610)
Proceeds from sale of common stock	0
Shares surrendered upon vesting of options and restricted stock awards to cover tax obligations	(2,910)		(2,910)
Stock option exercises and restricted stock vesting	640		640
Excess tax benefits from stock based compensation	1,180		1,180
Non-cash compensation expense	7,440		7,440
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	(15,990)		(15,990)
Balances at Dec. 31, 2014	$ 590,630	$ 450	$ 806,810	$ (226,850)	$ 10,220

Basis of Presentation	12 Months Ended
Basis of Presentation	Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Basis of Presentation TriMas Corporation ("TriMas" or the "Company"), and its consolidated subsidiaries, is a global manufacturer and distributor of products for commercial, industrial and consumer markets. The Company is principally engaged in the following reportable segments with diverse products and market channels: Packaging, Energy, Aerospace, Engineered Components, Cequent Asia Pacific Europe Africa ("Cequent APEA") and Cequent Americas. The Company renamed its former "Aerospace & Defense" reportable segment "Aerospace" effective in the third quarter of 2014 following the cessation of operations of NI Industries. See Note 6, "Discontinued Operations," for further information. See Note 19, "Segment Information," for further information on each of the Company's reportable segments.

- Definition

The entire disclosure for organization, consolidation and basis of presentation of financial statements disclosure.

+ References+ Details

New Accounting Pronouncements	12 Months Ended
New Accounting Pronouncements	Dec. 31, 2014
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
New Accounting Pronouncements	New Accounting Pronouncements In May 2014, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2014-09, "Revenue from Contracts with Customers (Topic 606)" ("ASU 2014-09"). ASU 2014-09 requires that an entity recognizes revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the company expects to be entitled in exchange for those goods or services. ASU 2014-09 is effective for fiscal years, and interim periods within those years, beginning after December 15, 2016, with early adoption prohibited. The Company is in the process of assessing the impact of the adoption of ASU 2014-09 on its consolidated financial statements. In April 2014, the FASB issued ASU 2014-08, "Presentation of Financial Statements (Topic 205) and Property, Plant, and Equipment (Topic 360): Reporting Discontinued Operations and Disclosures of Disposals of Components of an Entity" ("ASU 2014-08"). ASU 2014-08 changes the criteria for reporting discontinued operations and requires expanded disclosures about discontinued operations that will provide financial statement users with more information about the assets, liabilities, income and expenses of discontinued operations. ASU 2014-08 is effective for all disposals (or classifications as held for sale) of components of an entity that occur within annual periods, and interim periods within those years, beginning on or after December 15, 2014, with early adoption permitted for disposals (or classifications as held for sale) that have not been reported in financial statements previously issued or available for issuance. The Company expects to adopt ASU 2014-08 for the annual periods and interim periods within those years, beginning January 1, 2015.

Summary of Significant Accounting Policies

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Principles of Consolidation. The accompanying consolidated financial statements include the accounts and transactions of TriMas and its subsidiaries. Significant intercompany transactions have been eliminated.

The Company records the initial carrying amount of redeemable noncontrolling interests at fair value. In the event a redeemable noncontrolling interest is present at the end of a reporting period, the Company adjusts the carrying amount to the greater of (1) the initial carrying amount, increased or decreased for the redeemable noncontrolling interests' share of net income or loss, their share of comprehensive income or loss and dividends and (2) the redemption value as determined by a specified multiple of earnings, as defined. This method views the end of the reporting period as if it were also the redemption date for the redeemable noncontrolling interests. The Company conducts a quarterly review to determine if the fair value of the redeemable noncontrolling interests is less than the redemption value. If the fair value of the redeemable noncontrolling interests is less than the redemption value, there may be a charge to earnings per share attributable to TriMas Corporation.

Use of Estimates. The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America requires management of the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent assets and liabilities at the date of the financial statements. Such estimates and assumptions also affect the reported amounts of revenues and expenses during the reporting periods. Significant items subject to such estimates and assumptions include the carrying amount of property and equipment, goodwill and other intangibles, valuation allowances for receivables, inventories and deferred income tax assets, valuation of derivatives, estimated future unrecoverable lease costs, estimated unrecognized tax benefits, reserves for asbestos, legal and product liability matters, assets and obligations related to employee benefits and valuation of redeemable non-controlling interests. Actual results may differ from such estimates and assumptions.

Cash and Cash Equivalents. The Company considers cash on hand and on deposit and investments in all highly liquid debt instruments with initial maturities of three months or less to be cash and cash equivalents.

Receivables. Receivables are presented net of allowances for doubtful accounts of approximately $5.4 million and $3.6 million at December 31, 2014 and 2013, respectively. The Company monitors its exposure for credit losses and maintains allowances for doubtful accounts based upon the Company's best estimate of probable losses inherent in the accounts receivable balances. The Company does not believe that significant credit risk exists due to its diverse customer base.

Sales of Receivables. The Company may, from time to time, sell certain of its receivables to third parties. Sales of receivables are recognized at the point in which the receivables sold are transferred beyond the reach of the Company and its creditors, the purchaser has the right to pledge or exchange the receivables and the Company has surrendered control over the transferred receivables.

Inventories. Inventories are stated at the lower of cost or net realizable value, with cost determined using the first-in, first-out method. Direct materials, direct labor and allocations of variable and fixed manufacturing-related overhead are included in inventory cost.

Property and Equipment. Property and equipment additions, including significant improvements, are recorded at cost. Upon retirement or disposal of property and equipment, the cost and accumulated depreciation are removed from the accounts, and any gain or loss is included in the accompanying statement of income. Repair and maintenance costs are charged to expense as incurred.

Depreciation and Amortization. Depreciation is computed principally using the straight-line method over the estimated useful lives of the assets. Annual depreciation rates are as follows: building and land/building improvements three to 40 years, and machinery and equipment, three to 15 years. Capitalized debt issuance costs are amortized over the underlying terms of the related debt securities. Customer relationship intangibles are amortized over periods ranging from five to 25 years, while technology and other intangibles are amortized over periods ranging from one to 30 years.

Impairment of Long-Lived Assets and Definite-Lived Intangible Assets. The Company reviews, on at least a quarterly basis, the financial performance of its businesses for indicators of impairment. In reviewing for impairment indicators, the Company also considers events or changes in circumstances such as business prospects, customer retention, market trends, potential product obsolescence, competitive activities and other economic factors. An impairment loss is recognized when the carrying value of an asset group exceeds the future net undiscounted cash flows expected to be generated by that asset group. The impairment loss recognized is the amount by which the carrying value of the asset group exceeds its fair value.

Goodwill. The Company assesses goodwill for impairment on an annual basis by reviewing relevant qualitative and quantitative factors. More frequent evaluations may be required if the Company experiences changes in its business climate or as a result of other triggering events that take place. If carrying value exceeds fair value, a possible impairment exists and further evaluation is performed.

The Company determines its reporting units at the individual operating segment level, or one level below, when there is discrete financial information available that is regularly reviewed by segment management for evaluating operating results. For purposes of the Company's 2014 goodwill impairment test, the Company had 12 reporting units within its six reportable segments, 10 of which had goodwill.

In conducting the qualitative assessment, the Company considers relevant events and circumstances that affect the fair value or carrying amount of a reporting unit. Such events and circumstances can include macroeconomic conditions, industry and market considerations, overall financial performance, entity and reporting unit specific events, and capital markets pricing. The Company considers the extent to which each of the adverse events and circumstances identified affect the comparison of a reporting unit's fair value with its carrying amount. The Company places more weight on the events and circumstances that most affect a reporting unit's fair value or the carrying amount of its net assets. The Company considers positive and mitigating events and circumstances that may affect its determination of whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount. The Company also considers recent valuations of its reporting units, including the difference between the most recent fair value estimate and the carrying amount. These factors are all considered by management in reaching its conclusion about whether to perform the first step of the quantitative goodwill impairment test. If management concludes that further testing is required, the Company performs a quantitative valuation to estimate the fair value of its reporting units.

If the Company concludes that conducting a quantitative assessment is required, it will estimate the fair value of the reporting unit being evaluated utilizing a combination of three valuation techniques: discounted cash flow (Income Approach), market comparable method (Market Approach) and market capitalization (Direct Market Data Method). The Income Approach is based on management's operating plan and internal five-year forecast and utilizes forward-looking assumptions and projections, but considers factors unique to each reporting unit and related long-range plans that may not be comparable to other companies and that are not yet public. The Market Approach considers potentially comparable companies and transactions within the industries where the Company's reporting units participate, and applies their trading multiples to the Company's reporting units. This approach utilizes data from actual marketplace transactions, but reliance on its results is limited by difficulty in identifying companies that are specifically comparable to the Company's reporting units, considering the diversity of the Company's businesses, the relative sizes and levels of complexity. The Company also uses the Direct Market Data Method by comparing its book value and the estimates of fair value of the reporting units to the Company's market capitalization as of and at dates near the annual testing date. Management uses this comparison as additional evidence of the fair value of the Company, as its market capitalization may be suppressed by other factors such as the control premium associated with a controlling shareholder, the Company's degree of leverage and the float of the Company's common stock. Management evaluates and weights the results based on a combination of the Income and Market Approaches, and, in situations where the Income Approach results differ significantly from the Market and Direct Data Approaches, management re-evaluates and adjusts, if necessary, its assumptions.

Indefinite-Lived Intangibles. The Company assesses indefinite-lived intangible assets (primarily trademark/trade names) for impairment on an annual basis by reviewing relevant qualitative and quantitative factors. More frequent evaluations may be required if the Company experiences changes in its business climate or as a result of other triggering events that take place. If carrying value exceeds fair value, a possible impairment exists and further evaluation is performed.

In conducting the qualitative assessment, the Company considers relevant events and circumstances to determine whether it is more likely than not that the fair values of the indefinite-lived intangible assets are less than the carrying values. In addition to the events and circumstances that the Company considers above in its qualitative analysis for potential goodwill impairment, the Company also considers legal, regulatory and contractual factors that could affect the fair value or carrying amount of the Company's indefinite-lived intangible assets. The Company also considers recent valuations of its indefinite-lived intangible assets, including the difference between the most recent fair value estimates and the carrying amounts. These factors are all considered by management in reaching its conclusion about whether it is more likely than not that the fair values of the indefinite-lived intangible assets are less than the carrying values. If management concludes that further testing is required, the Company performs a quantitative valuation to estimate the fair value of its indefinite-lived intangible assets. If the carrying value exceeds fair value, an impairment is recorded.

Self-insurance. The Company is generally self-insured for losses and liabilities related to workers' compensation, health and welfare claims and comprehensive general, product and vehicle liability. The Company is generally responsible for up to $0.5 million per occurrence under its retention program for workers' compensation, between $0.3 million and $2.0 million per occurrence under its retention programs for comprehensive general, product and vehicle liability, and has a $0.3 million per occurrence stop-loss limit with respect to its self-insured group medical plan. Total insurance limits under these retention programs vary by year for comprehensive general, product and vehicle liability and extend to the applicable statutory limits for workers' compensation. Reserves for claims losses, including an estimate of related litigation defense costs, are recorded based upon the Company's estimates of the aggregate liability for claims incurred using actuarial assumptions about future events. Changes in assumptions for factors such as medical costs and actual experience could cause these estimates to change.

Pension Plans and Postretirement Benefits Other Than Pensions. Annual net periodic pension expense and benefit liabilities under defined benefit pension plans are determined on an actuarial basis. Assumptions used in the actuarial calculations could have a significant impact on plan obligations, and a lesser impact on current period expense. Annually, the Company reviews the actual experience compared to the more significant assumptions used and makes adjustments to the assumptions, if warranted. The healthcare trend rates are reviewed based upon actual claims experience. Discount rates are based upon an expected benefit payments duration analysis and the equivalent average yield rate for high-quality fixed-income investments. Pension benefits are funded through deposits with trustees and the expected long-term rate of return on fund assets is based upon actual historical returns and a review of other public company pension asset return data, modified for known changes in the market and any expected change in investment policy. Postretirement benefits are not funded and it is the Company's policy to pay these benefits as they become due.

Revenue Recognition. Revenues are recognized when products are shipped or services are provided to customers, the customer takes ownership and assumes risk of loss, the sales price is fixed and determinable and collectability is reasonably assured. Net sales is comprised of gross revenues less estimates of expected returns, trade discounts and customer allowances, which include incentives such as cooperative advertising agreements, volume discounts and other supply agreements in connection with various programs. Such deductions are recorded during the period the related revenue is recognized.

Cost of Sales. Cost of sales includes material, labor and overhead costs incurred in the manufacture of products sold in the period. Material costs include raw material, purchased components, outside processing and inbound freight costs. Overhead costs consist of variable and fixed manufacturing costs, wages and fringe benefits, and purchasing, receiving and inspection costs.

Selling, General and Administrative Expenses. Selling, general and administrative expenses include the following: costs related to the advertising, sale, marketing and distribution of the Company's products, shipping and handling costs, amortization of customer intangible assets, costs of finance, human resources, legal functions, executive management costs and other administrative expenses.

Research and Development Costs. Research and development ("R&D") costs are expensed as incurred. R&D expenses were approximately $1.7 million, $2.0 million and $1.3 million for the years ended December 31, 2014, 2013 and 2012, respectively, and are included in cost of sales in the accompanying statement of income.

Shipping and Handling Expenses. Freight costs are included in cost of sales and shipping and handling expenses, including those of Cequent Americas' distribution network, are included in selling, general and administrative expenses in the accompanying statement of income. Shipping and handling costs were $5.5 million, $4.6 million, and $4.1 million for each of the years ended December 31, 2014, 2013 and 2012, respectively.

Advertising and Sales Promotion Costs. Advertising and sales promotion costs are expensed as incurred. Advertising costs were approximately $9.8 million, $8.9 million and $7.9 million for the years ended December 31, 2014, 2013 and 2012, respectively, and are included in selling, general and administrative expenses in the accompanying statement of income.

Income Taxes. The Company computes income taxes using the asset and liability method, whereby deferred income taxes using current enacted tax rates are provided for the temporary differences between the financial reporting basis and the tax basis of assets and liabilities and for operating loss and tax credit carryforwards. The Company determines valuation allowances based on an assessment of positive and negative evidence on a jurisdiction-by-jurisdiction basis and records a valuation allowance to reduce deferred tax assets to the amount more likely than not to be realized. The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. The Company records interest and penalties related to unrecognized tax benefits in income tax expense.

Foreign Currency Translation. The financial statements of subsidiaries located outside of the United States are measured using the currency of the primary economic environment in which they operate as the functional currency. When translating into U.S. dollars, income and expense items are translated at average monthly exchange rates and assets and liabilities are translated at exchange rates in effect at the balance sheet date. Translation adjustments resulting from translating the functional currency into U.S. dollars are deferred as a component of accumulated other comprehensive income in the statement of shareholders' equity. Net foreign currency transaction losses were approximately $1.6 million for the year ended December 31, 2014, and $1.1 million for each of the years ended December 31, 2013 and 2012, and are included in other expense, net in the accompanying statement of income.

Derivative Financial Instruments. The Company records all derivative financial instruments at fair value on the balance sheet as either assets or liabilities, and changes in their fair values are immediately recognized in earnings if the derivatives do not qualify as effective hedges. If a derivative is designated as a fair value hedge, then changes in the fair value of the derivative are offset against the changes in the fair value of the underlying hedged item. If a derivative is designated as a cash flow hedge, then the effective portion of the changes in the fair value of the derivative is recognized as a component of other comprehensive income until the underlying hedged item is recognized in earnings or the forecasted transaction is no longer probable of occurring. The Company formally documents hedging relationships for all derivative transactions and the underlying hedged items, as well as its risk management objectives and strategies for undertaking the hedge transactions. See Note 13, "Derivative Instruments," for further information on the Company's financial instruments.

Fair Value of Financial Instruments. In accounting for and disclosing the fair value of these instruments, the Company uses the following hierarchy:


•	Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date;


•	Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly; and


•	Level 3 inputs are unobservable inputs for the asset or liability.

Valuation of the Company's interest rate swaps and foreign currency forward contracts are based on the income approach, which uses observable inputs such as interest rate yield curves and forward currency exchange rates.

The carrying value of financial instruments reported in the balance sheet for current assets and current liabilities approximates fair value due to the short maturity of these instruments. The Company's term loan A traded at 99.5% and 99.9% of par value as of December 31, 2014 and 2013, respectively. The Company's revolving credit facility traded at 99.2% and 99.6% of par value as of December 31, 2014 and 2013, respectively. The valuations of the term loan A and credit facility were determined based on Level 2 inputs under the fair value hierarchy, as defined.

Business Combinations. The Company records assets acquired and liabilities assumed from acquisitions at fair value. The fair value of working capital accounts generally approximate book value. The valuation of inventory, property, plant and equipment, and intangible assets require significant assumptions. Inventory is recorded at fair value based on the estimated selling price less costs to sell, including completion, disposal and holding period costs with a reasonable profit margin. Property, plant and equipment is recorded at fair value using a combination of both the cost and market approaches for both the real and personal property acquired. Under the cost approach, consideration is given to the amount required to construct or purchase a new asset of equal value at current prices, with adjustments in value for physical deterioration, as well as functional and economic obsolescence. Under the market approach, recent transactions for similar types of assets are used as the basis for estimating fair value. For trademark/trade names and technology and other intangible assets, the estimated fair value is based on projected discounted future net cash flows using the relief-from-royalty method. For customer relationship intangible assets, the estimated fair value is based on projected discounted future cash flows using the excess earnings method. The relief-from-royalty and excess earnings method are both income approaches that utilize key assumptions such as forecasts of revenue and expenses over an extended period of time, royalty rate percentages, tax rates, and estimated costs of debt and equity capital to discount the projected cash flows.

Earnings Per Share. Net earnings are divided by the weighted average number of shares outstanding during the year to calculate basic earnings per share. Diluted earnings per share are calculated to give effect to stock options and other stock-based awards. The calculation of diluted earnings per share included 245,828, 293,021 and 219,911 restricted shares for the years ended December 31, 2014, 2013 and 2012, respectively. Options to purchase 251,667, 342,448 and 675,665 shares of common stock were outstanding at December 31, 2014, 2013 and 2012, respectively. The calculation of diluted earnings per share included 141,656, 176,428 and 208,175 options to purchase shares of common stock for the years ended December 31, 2014, 2013 and 2012, respectively.

Stock-based Compensation. The Company recognizes compensation expense related to equity awards based on their fair values as of the grant date. In addition, the Company periodically updates its estimate of attainment for each restricted share with a performance factor based on current and forecasted results, reflecting the change from prior estimate, if any, in current period compensation expense. The disclosed number of shares granted considers only the targeted number of shares until such time that the performance condition has been satisfied. If the performance conditions are not achieved, no award is earned.

Other Comprehensive Income. The Company refers to other comprehensive income as revenues, expenses, gains and losses that under accounting principles generally accepted in the United States of America are included in comprehensive income but are excluded from net earnings as these amounts are recorded directly as an adjustment to stockholders' equity. Other comprehensive income is comprised of foreign currency translation adjustments, amortization of prior service costs and unrecognized gains and losses in actuarial assumptions for pension and postretirement plans and changes in unrealized gains and losses on derivatives.

- Definition

The entire disclosure for all significant accounting policies of the reporting entity.

+ References+ Details

Acquisitions

12 Months Ended

Dec. 31, 2014

Business Acquisition [Line Items]

Business Combination Disclosure [Text Block]

Acquisitions

2014 Acquisitions

Allfast Fastening Systems

On October 17, 2014, the Company acquired 100% of the equity interest in Allfast Fastening Systems, Inc. ("Allfast") for the purchase price of approximately $351.2 million, net of cash acquired, with an additional $15.7 million of deferred purchase price related to certain tax related and other reimbursements in accordance with the purchase agreement. Allfast is a global manufacturer of solid and blind rivets, blind bolts, temporary fasteners and installation tools for the aerospace industry. The acquisition strengthens the Company's specialty product offering and is strategically aligned with its growing aerospace businesses. Allfast is included in the Company's Aerospace segment.

The following table summarizes the fair value of consideration paid for Allfast, and the assets acquired and liabilities assumed:



	October 17, 2014
	(dollars in thousands)
Consideration
Cash paid, net of cash acquired	$	351,220
Deferred purchase price^(a)	15,730
Total consideration	$	366,950
Recognized amounts of identifiable assets acquired and liabilities assumed
Receivables	$	8,950
Inventories	19,850
Intangible assets other than goodwill^(b)	165,000
Prepaid expenses and other assets	340
Property and equipment, net	26,490
Accounts payable and accrued liabilities	(2,620		)
Total identifiable net assets	218,010
Goodwill^(c)	148,940
	$	366,950

___________________________

^(a)Of the deferred purchase price, approximately $8.7 million, represents the Company's best estimate of the underlying obligations for certain tax amounts the Company has agreed to reimburse the previous owner in order to acquire additional tax attributes. In addition, it includes approximately $7.0 million of other liabilities which the Company has agreed to pay on behalf of the previous owner, of which approximately $4.1 million was paid during 2014.

^(b) Consists of approximately $83.0 million of customer relationships with an estimated useful life of 18 years, $33.0 million of technology and other intangible assets with an estimated useful life of 15 years and $49.0 million of trademark/tradename with an indefinite useful life.

^(c)All of the goodwill was assigned to the Company's Aerospace reportable segment and is expected to be deductible for tax purposes.

The results of operations of Allfast are included in the Company's results beginning October 17, 2014. The actual amounts of net sales and operating profit of Allfast included in the accompanying consolidated statement of income for the year ended December 31, 2014 are $9.1 million and $1.3 million, respectively.

The following table summarizes the supplemental pro forma results of the combined entity as if the acquisition had occurred on January 1, 2013. The supplemental pro forma information presented below is for informational purposes and is not necessarily indicative of either future results of operations or results that might have been achieved had the acquisition been consummated on January 1, 2013:



	Pro forma Combined ^(a)
	Year ended December 31,
	2014		2013
	(dollars in thousands)
Net sales	$	1,548,220	$	1,442,490
Net income attributable to TriMas Corporation	$	69,430	$	76,260

___________________________

^(a)The supplemental pro forma results reflect certain material adjustments, as follows:


1.	Pre-tax pro forma adjustments for amortization expense of $6.0 million and $6.8 million for the years ended December 31, 2014 and December 31, 2013 on the intangible assets associated with the acquisition.


2.	Pre-tax pro forma adjustments of $4.9 million and $7.1 million for the years ended December 31, 2014 and December 31, 2013, respectively, to reflect interest expense incurred on the incremental term loan A and revolver borrowings incurred in order to fund the acquisition.

Total acquisition costs incurred by the Company in connection with its purchase of Allfast, primarily related to third party legal, accounting and tax diligence fees, were approximately $2.2 million, all of which were incurred during 2014. These costs are recorded in selling, general and administrative expenses in the accompanying consolidated statement of income.

Other Acquisitions

In July 2014, the Company completed the acquisition of Lion Holdings PVT. Ltd. ("Lion Holdings") within the Company's Packaging reportable segment for the amount of approximately $27.5 million, net of cash acquired. Located in both India and Vietnam, Lion Holdings specializes in the manufacture of highly engineered dispensing solutions and generated approximately $10 million in revenue for the twelve months ended June 30, 2014.

The Company has recorded preliminary purchase accounting adjustments for its 2014 acquisitions, but may refine such amounts as it finalizes these estimates during the requisite one-year measurement periods.

2013 Acquisitions

During 2013, the Company completed various 100%-owned acquisitions for an aggregate amount of approximately $105.8 million, net of cash acquired, with an additional $12.4 million of deferred purchase price and contingent consideration, based primarily on a fixed date and payment schedule over the next five years. Of these acquisitions, the most significant, in chronological order of acquisition date, are as follows:

•

Martinic Engineering, Inc. ("Martinic"), acquired in January, located in the United States and included in the Company's Aerospace reportable segment, is a manufacturer of highly-engineered, precision machined, complex parts for commercial and military aerospace applications, including auxiliary power units, as well as electrical, hydraulic and pneumatic systems and generated approximately $13 million in revenue for the 12 months ended December 31, 2012.

•

Wulfrun Specialised Fasteners Limited ("Wulfrun"), acquired in March, located in the United Kingdom and included in the Company's Energy reportable segment, is a manufacturer and distributor of specialty bolting and CNC machined components for use in critical oil and gas, pipeline and power generation applications, and generated approximately $10 million in revenue for the 12 months ended December 31, 2012.


•	C.P. Witter Limited ("Witter"), acquired in April, located in the United Kingdom and included in the Company's Cequent APEA reportable segment, is a manufacturer of highly-engineered towbars and accessories which are distributed through a wide network of commercial dealers, and generated approximately $20 million in revenue for the 12 months ended March 31, 2013.

•

Towing technology and business assets of AL-KO GmbH ("AL-KO"), acquired in July, located in Germany and Finland and is included in the Company's Cequent APEA reportable segment. The acquired assets generated approximately $16 million of revenue for the 12 months ended June 30, 2013. The fair value of the AL-KO net assets acquired exceeded the purchase price, resulting in a bargain purchase gain of approximately $2.9 million, which is included in other (expense), net in the accompanying consolidated statement of income.

•

Mac Fasteners, Inc. ("Mac Fasteners"), acquired in October, located in the United States and included in the Company's Aerospace reportable segment, is in the business of manufacturing and distribution of stainless steel aerospace fasteners, globally utilized by OEMs, aftermarket repair companies, and commercial and military aircraft producers, and generated approximately $17 million in revenue for the 12 months ended September 30, 2013.


•	DHF Soluções Automotivas Ltda ("DHF"), acquired in November, located in Brazil within the Company's Cequent Americas reportable segment, is a manufacturer and distributor of aftermarket automotive hitching and accessory products, and generated approximately $12 million of revenue for the 12 months ended September 30, 2013.

While the individual and aggregate historical and current year revenue and earnings associated with the Company's 2013 acquisitions is not significant compared to the Company's total results of operations, the following information has been provided to summarize the aggregate fair value of consideration paid for the acquisitions, the assets acquired and liabilities assumed.



	Year ended December 31, 2013
	(dollars in thousands)
Consideration
Initial cash paid net of cash acquired	$	105,790
Deferred/contingent consideration^(a)	12,370
Total consideration	$	118,160
Recognized amounts of identifiable assets acquired and liabilities assumed
Receivables	$	12,420
Inventories	27,350
Intangible assets other than goodwill^(b)	41,140
Prepaid expenses and other assets	17,480
Property and equipment, net	20,930
Accounts payable and accrued liabilities	(12,510		)
Deferred income taxes	(8,900		)
Other long-term liabilities	(18,580		)
Total identifiable net assets	79,330
Goodwill^(c)	38,830
	$	118,160

__________________________

^(a)Deferred/contingent consideration includes approximately $9.8 million of both short-term and long-term deferred purchase price, based on set amounts and fixed payment schedules per the purchase agreement, and an additional $2.6 million of contingent consideration to be paid based on a multiple of future earnings, as defined.

^(b) Consists of approximately $27.6 million of customer relationships with an estimated weighted average useful life of 10 years, $1.5 million of technology and other intangible assets with an estimated weighted average useful life of four years and $12.1 million of trademark/trade names with an indefinite useful life.

^(c)Goodwill includes approximately $2.9 million of bargain purchase gain resulting from the acquisition of the towing technology and business assets of AL-KO, which is included in other expense, net in the accompanying consolidated statement of income for the year ended December 31, 2013.

2012 Acquisitions

Arminak & Associates

On February 24, 2012, the Company acquired 70% of the membership interests of Arminak & Associates, LLC ("Arminak") for the purchase price of approximately $67.7 million. Arminak is in the business of designing, manufacturing and supplying foamers, lotion pumps, fine mist sprayers and other packaging solutions for the cosmetic, personal care and household product markets. The acquisition of Arminak enhances the Company's highly-engineered product offering and provides access to large global customers in the cosmetic and personal care markets. Arminak is included in the Company's Packaging reportable segment.

The purchase agreement provides the Company an option to purchase, and Arminak's previous owners ("Sellers") an option to sell, the remaining 30% noncontrolling interest at specified dates in the future based on a multiple of earnings, as defined. The call and put options become exercisable during the first quarters of 2014, 2015 and 2016. During the first exercise period, in 2014, TriMas and the Sellers had the opportunity to call or put a 10% interest in Arminak. During the second exercise period, in 2015, TriMas and the Sellers have the opportunity to call or put an additional 10%, or up to all remaining interests held by Sellers per joint agreement, as defined in the purchase agreement. Finally, during the third exercise period, in 2016, a call or put may be exercised for all or any portions of the remaining interests held by the Sellers. The original combination of a noncontrolling interest and a redemption feature resulted in a redeemable noncontrolling interest, which was classified outside of permanent equity on the accompanying consolidated balance sheet. In order to estimate the fair value of the redeemable noncontrolling interest in Arminak upon acquisition, the Company utilized the Monte Carlo valuation method, using variations of estimated future discounted cash flows given certain significant assumptions including expected revenue growth, minimum and maximum estimated levels of gross profit margin, future expected cash flows, amounts transferred during each call and put exercise period and appropriate discount rates. As these assumptions are not observable in the market, the calculation represents a Level 3 fair value measurement. The Company recorded the redeemable noncontrolling interest at fair value at the date of acquisition.

On March 11, 2014, in lieu of the put call option in the original purchase agreement, the Company entered into a new agreement to purchase the entire 30% noncontrolling interest in Arminak for a cash purchase price of $51.0 million. The purchase agreement also includes additional contingent consideration of up to $7.0 million, with the amount to be earned based on the achievement of certain levels of 2015 financial performance. In order to estimate the fair value of the contingent consideration, the Company utilized the Monte Carlo valuation method, using variations of expected future payouts given certain significant assumptions including expected revenue and earnings growth, volatility and risk. As these assumptions are not observable in the market, the calculation represents a Level 3 fair value measurement. As of December 31, 2014, the estimated liability for the payout of the contingent consideration is $1.1 million. The final contingent consideration is expected to be paid, if earned, in the second quarter of 2016.

As part of purchasing the remaining membership interest, the Company finalized the calculation of the redeemable noncontrolling interest as of March 11, 2014. Changes in the carrying amount of redeemable noncontrolling interest are summarized as follows:



	Redeemable Noncontrolling interest
	(dollars in thousands)
Beginning balance, February 24, 2012	$	25,630
Distributions to noncontrolling interests	(1,260		)
Net income attributable to noncontrolling interests	2,410
Ending balance, December 31, 2012	$	26,780
Distributions to noncontrolling interests	(2,710		)
Net income attributable to noncontrolling interests	4,520
Redemption value adjustments for noncontrolling interests	890
Ending balance, December 31, 2013	$	29,480
Distributions to noncontrolling interests	(580		)
Net income attributable to noncontrolling interests	810
Ending balance, March 11, 2014	$	29,710

The difference between the cash purchase price and final redeemable noncontrolling interest as of March 11, 2014 was recorded as a reduction in paid in capital, net of tax, as included in the accompanying consolidated statement of shareholders' equity.

The following table summarizes the fair value of consideration paid for Arminak, and the assets acquired and liabilities assumed, as well as the fair value of the noncontrolling interest in Arminak at the acquisition date.



	February 24, 2012
	(dollars in thousands)
Consideration
Initial cash paid net of working capital adjustment	$	59,200
Contingent consideration ^(a)	8,490
Total consideration	$	67,690
Recognized amounts of identifiable assets acquired and liabilities assumed
Receivables	$	8,760
Inventories	4,200
Intangible assets other than goodwill ^(b)	48,400
Other assets	2,450
Accounts payable and accrued liabilities	(4,270		)
Long-term liabilities	(1,610		)
Total identifiable net assets	57,930
Redeemable noncontrolling interest	(25,630		)
Goodwill ^(c)	35,390
	$	67,690

__________________________

^(a)The contingent consideration represented the Company's best estimate, based on its review, at the time of purchase, of the underlying potential obligations estimated at a range of $8 million to $9 million, of certain Seller tax-related liabilities for which the Company indemnified the Sellers as part of the purchase agreement. During 2012, the Company paid $4.9 million of additional purchase price related to the contingent consideration. No additional amounts were paid during 2013 or 2014. The remaining liability range of $3.1 million to $4.1 million continues to represent the Company's best estimate of the remaining potential obligation at December 31, 2014.

^(b)Consists of $33.0 million of customer relationships with an estimated 10 year useful life, $7.9 million of trademarks/trade names with an indefinite useful life and $7.5 million of technology and other intangible assets with an estimated eight year useful life.

^(c)All of the goodwill was assigned to the Company's Packaging reportable segment and is expected to be deductible for tax purposes.

The results of operations of Arminak are included in the Company's results beginning February 24, 2012. The actual amounts of net sales and operating profit of Arminak included in the accompanying consolidated statement of income for the year ended December 31, 2012 are $65.9 million and $8.0 million, respectively.

The following table summarizes the supplemental pro forma results of the combined entity as if the acquisition had occurred on January 1, 2011. The supplemental pro forma information presented below is for informational purposes and is not necessarily indicative of either future results of operations or results that might have been achieved had the acquisition been consummated on January 1, 2011:



	Pro forma Combined ^(a)
	Year ended December 31,
	2012		2011
	(dollars in thousands)
Net sales	$	1,280,940	$	1,144,020
Net income attributable to TriMas Corporation	$	35,850	$	54,540

___________________________

^(a)The supplemental pro forma results reflect certain adjustments, such as adjustments for acquisition costs incurred and purchase accounting adjustments related to step-up in value and subsequent amortization of inventory and intangible assets.

Total acquisition costs incurred by the Company in connection with its purchase of Arminak, primarily related to third party legal, accounting and tax diligence fees, were approximately $1.3 million, of which approximately $1.0 million were incurred during the first quarter of 2012. These costs are recorded in selling, general and administrative expenses in the accompanying consolidated statement of income.

Other acquisitions

Also during 2012, the Company completed other acquisitions for approximately $26.8 million in cash, in aggregate, with an additional estimated $14.4 million of deferred purchase price and contingent consideration, based primarily on post-acquisition operating results, payable over the next five years. Of these acquisitions, the most significant, in chronological order of acquisition date, are as follows:


•	CIFAL Industrial e Comercial Ltda ("CIFAL"), within the Energy reportable segment, is a Brazilian manufacturer and supplier of specialty fasteners and stud bolts, primarily to the oil and gas industry and generated approximately $9 million in revenue for the twelve months ended June 30, 2012.


•	Engetran Engenharia, Indústria, e Comércio de Peças e Acessórios Veiculares Ltda ("Engetran"), within the Company's Cequent Americas reportable segment, is a Brazilian manufacturer of trailering and towing products including trailer hitches, skid plates and related accessories and generated approximately $6 million in revenue for the twelve months ended June 30, 2012.


•	Trail Com Limited ("Trail Com"), with locations in New Zealand and Australia, and included in the Company's Cequent APEA reportable segment, is a distributor of towing accessories and trailer components and generated approximately $12 million in revenue for the twelve months ended June 30, 2012.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

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+ Details

Discontinued Operations

12 Months Ended

Dec. 31, 2014

Discontinued Operations and Disposal Groups [Abstract]

Discontinued Operations

During the third quarter of 2014, the Company ceased operations of its former NI Industries business. NI Industries manufactured cartridge cases for the defense industry and was party to a U.S. Government facility maintenance contract. The Company received approximately $6.7 million for the sale of certain intellectual property and related inventory and tooling. This amount is included in income from discontinued operations in the accompanying consolidated statement of income.

During the fourth quarter of 2011, the Company sold its precision tool cutting and specialty fittings lines of business, both of which were part of the Engineered Components reportable segment. The purchase agreement included up to $2.5 million of contingent consideration, based on achievement of certain levels of financial performance in 2012 and 2013. During the second quarter of 2013, the Company received approximately $1.0 million of a possible $1.3 million as payout for the 2012 financial performance criteria. This amount is included in income from discontinued operations in the accompanying consolidated statement of income. No payout was received in 2014, as the 2013 financial performance criteria were not met.

During the first quarter of 2009, the Company completed the sale of certain assets within its specialty laminates, jacketings and insulation tapes line of business, which was part of the Packaging reportable segment. The Company's manufacturing facility is subject to a lease agreement expiring in 2024 that was not assumed by the purchaser of the business. During the fourth quarter of 2014, the Company re-evaluated its estimate of unrecoverable future obligations initially recorded in 2009 and recorded an additional charge of approximately $1.8 million, based on further deterioration of real estate values and market comparables for this facility.

The results of the aforementioned businesses are reported as discontinued operations for all periods presented.

Results of discontinued operations are summarized as follows:



	Year ended December 31,
	2014			2013			2012
	(dollars in thousands)
Net sales	$	3,480		$	6,260		$	5,400
Income (loss) from discontinued operations, before income taxes	$	4,040		$	1,670		$	(230	)
Income tax benefit (expense)	(1,490		)	(550		)	90
Income (loss) from discontinued operations, net of income taxes	$	2,550		$	1,120		$	(140	)

- Definition

The entire disclosure for the facts and circumstances leading to the completed or expected disposal, manner and timing of disposal, the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the segment in which the disposal group was reported, and the classification (whether sold or classified as held for sale) and carrying value of the assets and liabilities comprising the disposal group. Includes all disposal groups, including those classified as components of the entity (discontinued operations).

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+ Details

Facility Closures	12 Months Ended
Facility Closures	Dec. 31, 2014
Restructuring and Related Activities [Abstract]
Restructuring and Related Activities Disclosure	Facility Closures and Sale of Business Goshen, Indiana facility In November 2012, the Company announced plans to close its manufacturing facility in Goshen, Indiana, moving production from Goshen to lower-cost manufacturing facilities during 2013. The Company completed the move and ceased operations in Goshen during the fourth quarter of 2013, at which time, the Company recorded a pre-tax charge within its Cequent Americas reportable segment of approximately $4.6 million for estimated future unrecoverable lease obligations on the Goshen facility, net of estimated sublease recoveries, for the lease agreement that expires in 2022. Also in 2013, upon completion of negotiations pursuant to a collective bargaining agreement, the Company recorded charges, primarily for severance benefits for its approximately 350 union hourly workers to be involuntarily terminated, of approximately $4.0 million, of which $3.6 million is included in cost of sales and $0.4 million is included in selling, general and administrative expenses in the accompanying consolidated statement of income. During 2012, the Company recorded charges, primarily related to severance benefits for approximately 70 salaried employees to be involuntarily terminated as part of the closure of approximately $1.2 million, of which $0.8 million is included in cost of sales and $0.4 million is included in selling, general and administrative expenses in the accompanying consolidated statement of income. As of December 31, 2014, the hourly and salary benefits have been fully paid. In addition, the Company incurred approximately $2.4 million and $0.2 million in 2013 and 2012, respectively, of pre-tax non-cash charges related to accelerated depreciation expense as a result of shortening the expected lives on certain machinery, equipment and leasehold improvement assets that the Company no longer utilizes following the facility closure. São Paulo, Brazil facility In June 2014, the Company announced the restructuring of its Brazilian business within the Energy reportable segment, including plans to close its manufacturing facility in São Paulo, Brazil by the end of 2014. In connection with this action, the Company recorded charges of approximately $0.5 million, primarily related to severance benefits, which is included in cost of sales in the accompanying consolidated statement of income, for its approximately 60 employees involuntarily terminated as a result of this closure. During the fourth quarter of 2014, upon the cease use date of the facility, the Company recorded a pre-tax charge within in its Energy reportable segment of approximately $3.9 million for estimated future unrecoverable lease obligation, net of estimated sublease recoveries, for the lease agreement that expires in 2022. Additionally, the Company recorded a $1.3 million charge related to the release of historical currency translation adjustments, which is included in dispositions of property and equipment in the accompanying consolidated statement of income. Sale of Business On August 5, 2013, the Company announced the sale of its business in Italy within the Packaging reportable segment for cash of approximately $10.3 million. As a result, the Company recorded a pre-tax gain of approximately $10.5 million, of which $7.9 million related to the release of historical currency translation adjustments into income, which is included in dispositions of property and equipment in the accompanying consolidated statement of income.

- Definition

The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.

+ References+ Details

Goodwill and Other Intangible Assets

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Goodwill

The Company conducted its annual goodwill impairment test as of October 1, 2014. For purposes of its 2014, 2013 and 2012 goodwill impairment tests, the Company performed a Step Zero qualitative assessment of potential goodwill impairment. In performing the Step Zero assessment, the Company considered relevant events and circumstances that could affect the fair value or carrying amount of the Company's reporting units, such as macroeconomic conditions, industry and market considerations, overall financial performance, entity and reporting unit specific events and capital markets pricing. The Company also considered the 2010 annual goodwill impairment quantitative test results, where the estimated fair value of each of the Company's reporting units with goodwill exceeded the carrying value by more than 30%, and subsequent changes in the reporting units' revenues, profitability and carrying values. Based on the Step Zero analysis performed, the Company does not believe that it is more likely than not that the fair value of a reporting unit is less than its carrying amount in 2014, 2013 and 2012; therefore, the Company determined that Steps I and II were not required for the 2014, 2013 and 2012 goodwill impairment tests.

During the third quarter of 2014, based on a few consecutive quarters of revenue and earnings declines compared to historical levels within the Company's Energy reporting unit, the Company determined that there were indicators of a decline in fair value of the Energy reporting unit, which also may indicate a potential impairment of the recorded goodwill. As such, the Company conducted a Step I quantitative goodwill impairment analysis as required by the authoritative accounting literature. The Company utilized both income and market-based approaches, placing a 75% and 25% weighting on each, respectively. Significant management assumptions used under the income approach were a weighted average cost of capital of 13% and an estimated residual growth rate of 3%. In considering the weighted average cost of capital for the reporting unit, management considered the level of risk inherent in the cash flow projections based on historical attainment of its projections and current market conditions. Upon completion of the goodwill impairment test, the Company determined that the fair value of the Energy reporting unit exceeded the carrying value by more than 20%, and thus there was no goodwill impairment. In addition, a 1% reduction in residual growth rate combined with a 1% increase in the weighted average cost of capital would not have changed the conclusions reached under the Step I impairment test.

Changes in the carrying amount of goodwill for the years ended December 31, 2014 and 2013 are as follows:



									Engineered		Cequent		Cequent
	Packaging			Energy			Aerospace		Components		APEA		Americas			Total
	(dollars in thousands)
Balance, December 31, 2012	$	158,980		$	64,210		$	41,130	$	3,180	$	—	$	3,440		$	270,940
Goodwill from acquisitions	—			14,440			19,950		4,240		—		4,410			43,040
Goodwill associated with sold businesses	(2,060		)	—			—		—		—		—			(2,060		)
Foreign currency translation and other	1,140			(2,730		)	—		—		—		(670		)	(2,260		)
Balance, December 31, 2013	$	158,060		$	75,920		$	61,080	$	7,420	$	—	$	7,180		$	309,660
Goodwill from acquisitions	15,810			—			149,050		—		—		—			164,860
Foreign currency translation and other	(4,520		)	(2,740		)	—		—		—		(600		)	(7,860		)
Balance, December 31, 2014	$	169,350		$	73,180		$	210,130	$	7,420	$	—	$	6,580		$	466,660

Other Intangible Assets

The Company conducted its annual indefinite-lived intangible asset impairment test as of October 1, 2014. For the purposes of the Company's 2014, 2013 and 2012 indefinite-lived intangible asset impairment tests, the Company performed a qualitative assessment to determine whether it was more likely than not that the fair values of the indefinite-lived intangible assets are less than the carrying values. In performing the qualitative assessment, the Company considered similar events and circumstances to those considered in the Step Zero analysis for goodwill impairment testing and also considered legal, regulatory and contractual factors that could affect the fair value or carrying amount of the Company's indefinite-lived intangible assets. The Company also considered the 2011 annual indefinite-lived intangible asset impairment quantitative test results, where the estimated fair value of each of the Company's indefinite-lived intangible assets exceeded the carrying value by more than 35%, as well as the Company's results of operations and improved capital structure. Based on the qualitative assessment performed, the Company does not believe that it is more likely than not that the fair values of each of its indefinite-lived intangible assets are less than the carrying values; therefore, a fair value calculation of the indefinite-lived intangible assets is not required for the 2014, 2013 and 2012 annual indefinite-lived intangible asset impairment tests.

The gross carrying amounts and accumulated amortization of the Company's other intangibles as of December 31, 2014 and 2013 are summarized below. The Company amortizes these assets over periods ranging from one to 30 years.



	As of December 31, 2014					As of December 31, 2013
Intangible Category by Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
	(dollars in thousands)
Finite-lived intangible assets:
Customer relationships, 5 - 12 years	$	109,460	$	(44,370	)	$	105,090	$	(36,260	)
Customer relationships, 15 - 25 years	237,610		(103,390		)	154,610		(94,200		)
Total customer relationships	347,070		(147,760		)	259,700		(130,460		)
Technology and other, 1 - 15 years	71,830		(32,250		)	38,980		(28,940		)
Technology and other, 17 - 30 years	44,120		(27,560		)	43,990		(25,310		)
Total technology and other	115,950		(59,810		)	82,970		(54,250		)
Indefinite-lived intangible assets:
Trademark/Trade names	108,480		—			61,570		—
Total other intangible assets	$	571,500	$	(207,570	)	$	404,240	$	(184,710	)

Amortization expense related to intangible assets as included in the accompanying consolidated statement of income is summarized as follows:



	Year ended December 31,
	2014		2013		2012
	(dollars in thousands)
Technology and other, included in cost of sales	$	5,310	$	4,870	$	4,940
Customer relationships, included in selling, general and administrative expenses	18,400		14,900		14,880
Total amortization expense	$	23,710	$	19,770	$	19,820

Estimated amortization expense for the next five fiscal years beginning after December 31, 2014 is as follows:



Year ended December 31,	Estimated Amortization Expense
	(dollars in thousands)
2015		$28,760
2016		$27,970
2017		$27,600
2018		$24,020
2019		$23,100

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References+ Details

Inventories

12 Months Ended

Dec. 31, 2014

Inventory Disclosure [Abstract]

Inventories

Inventories consist of the following components:



	December 31, 2014		December 31, 2013
	(dollars in thousands)
Finished goods	$	194,690	$	173,140
Work in process	30,790		31,880
Raw materials	69,150		65,670
Total inventories	$	294,630	$	270,690

- Definition

The entire disclosure for inventory. This may include, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the major classes of inventory, and the nature of the cost elements included in inventory. If inventory is stated above cost, accrued net losses on firm purchase commitments for inventory and losses resulting from valuing inventory at the lower-of-cost-or-market may also be included. For LIFO inventory, may disclose the amount and basis for determining the excess of replacement or current cost over stated LIFO value and the effects of a LIFO quantities liquidation that impacts net income.

+ References+ Details

Property and Equipment, Net

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property and Equipment, Net

Property and equipment consists of the following components:



	December 31, 2014		December 31, 2013
	(dollars in thousands)
Land and land improvements	$	15,000	$	5,520
Buildings	69,820		61,960
Machinery and equipment	383,440		351,960
	468,260		419,440
Less: Accumulated depreciation	235,610		213,290
Property and equipment, net	$	232,650	$	206,150

Depreciation expense as included in the accompanying consolidated statement of income is as follows:



	Year ended December 31,
	2014		2013		2012
	(dollars in thousands)
Depreciation expense, included in cost of sales	$	28,030	$	26,410	$	21,520
Depreciation expense, included in selling, general and administrative expense	4,730		4,380		3,500
Total depreciation expense	$	32,760	$	30,790	$	25,020

- Definition

The entire disclosure for long-lived, physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, accounting policies and methodology, roll forwards, depreciation, depletion and amortization expense, including composite depreciation, accumulated depreciation, depletion and amortization expense, useful lives and method used, income statement disclosures, assets held for sale and public utility disclosures.

+ References+ Details

Long-term Debt

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Long-term debt

Long-term Debt

The Company's long-term debt consists of the following:



	December 31, 2014		December 31, 2013
	(dollars in thousands)
Credit Agreement	$	559,530	$	246,130
Receivables facility and other	79,800		59,610
	639,330		305,740
Less: Current maturities, long-term debt	23,860		10,290
Long-term debt	$	615,470	$	295,450

Credit Agreement

The Company is party to a credit agreement (as amended and restated, the "Credit Agreement") consisting of a $575.0 million senior secured revolving credit facility, which permits revolving borrowings denominated in specific foreign currencies, subject to a $75.0 million sub limit, and a $450.0 million senior secured term loan A facility ("Term Loan A Facility"). The Company increased its Term Loan A Facility during the fourth quarter of 2014 when the Company amended the Credit Agreement to add a $275.0 million incremental senior secured term loan A facility (“Incremental Term Loan A Facility”). The proceeds from the Incremental Term Loan A Facility plus cash and additional borrowings under the Company's existing senior secured revolving credit facility were used to fund the Allfast acquisition.

Below is a summary of key terms under the Credit Agreement as of December 31, 2014:



Instrument	Amount ($ in millions)	Maturity Date	Interest Rate
Existing Credit Agreement
Senior secured revolving credit facility	$575.0	10/16/2018	LIBOR^(a) plus 1.500%^(b)
Senior secured term loan A facility	$175.0	10/16/2018	LIBOR^(a) plus 1.500%^(b)

Incremental Term Loan A Facility
Senior secured term loan A facility	$275.0	10/16/2018	LIBOR^(a) plus 1.875%^(b)

__________________________

^(a) London Interbank Offered Rate ("LIBOR")

^(b)The interest rate spread is based upon the leverage ratio, as defined, as of the most recent determination date.

The Credit Agreement also provides incremental term loan facility commitments and/or incremental revolving credit facility commitments in an amount not to exceed the greater of $300 million and an amount such that, after giving effect to such incremental commitments and the incurrence of any other indebtedness substantially simultaneously with the making of such incremental commitments, the senior secured net leverage ratio, as defined in the Credit Agreement, is no greater than 2.50 to 1.00. The terms and conditions of any incremental term loan facility and/or incremental revolving credit facility commitments must be no more favorable than the existing credit facilities under the Credit Agreement.

The Company may be required to prepay a portion of the loans under the Term Loan A Facility in an amount equal to a percentage of the Company's excess cash flow, as defined, with such percentage based on the Company's leverage ratio, as defined. As of December 31, 2014, no amounts are due under this provision.

The Company is also able to issue letters of credit, not to exceed $75.0 million in aggregate, against its revolving credit facility commitments. At December 31, 2014 and 2013, the Company had letters of credit of approximately $21.9 million and $24.1 million, respectively, issued and outstanding.

At December 31, 2014, the Company had $118.1 million outstanding under its revolving credit facility and had $435.0 million potentially available after giving effect to approximately $21.9 million of letters of credit issued and outstanding. At December 31, 2013, the Company had $71.1 million outstanding under its revolving credit facility and had $479.8 million potentially available after giving effect to approximately $24.1 million of letters of credit issued and outstanding. However, including availability under its accounts receivable facility and after consideration of leverage restrictions contained in the Credit Agreement, at December 31, 2014 and 2013, the Company had $192.0 million and $360.3 million, respectively, of borrowing capacity available for general corporate purposes.

Principal payments required under the Credit Agreement for the Term Loan A Facility are approximately $5.8 million due each fiscal quarter from March 2015 through December 2016 and approximately $8.7 million due each fiscal quarter from March 2017 through September 2018, with final payment of $333.8 million due on October 16, 2018.

The debt under the Credit Agreement is an obligation of the Company and certain of its domestic subsidiaries and is secured by substantially all of the assets of such parties. Borrowings under the $75.0 million foreign currency sub limit of the $575.0 million senior secured revolving credit facility are secured by a pledge of the assets of the foreign subsidiary borrowers that are a party to the agreement. The Credit Agreement also contains various negative and affirmative covenants and other requirements affecting the Company and its subsidiaries, including restrictions on incurrence of debt, liens, mergers, investments, loans, advances, guarantee obligations, acquisitions, asset dispositions, sale-leaseback transactions, hedging agreements, dividends and other restricted payments, transactions with affiliates, restrictive agreements and amendments to charters, bylaws, and other material documents. The terms of the Credit Agreement also require the Company and its subsidiaries to meet certain restrictive financial covenants and ratios computed quarterly, including a maximum leverage ratio (total consolidated indebtedness plus outstanding amounts under the accounts receivable securitization facility over consolidated EBITDA, as defined) and a minimum interest expense coverage ratio (consolidated EBITDA, as defined, over cash interest expense, as defined). At December 31, 2014, the Company was in compliance with its financial covenants contained in the Credit Agreement.

The Company incurred approximately $3.8 million in fees to add the Incremental Term Loan A Facility and to amend the Credit Agreement, of which $0.4 million was capitalized as deferred financing fees and $3.4 million was recorded as debt financing fees in the accompanying consolidated statement of income.

In 2013 and 2012, the Company incurred approximately $3.6 million and $6.4 million, respectively, in fees to amend the previous credit agreements, of which $3.1 million and $4.5 million was capitalized as deferred financing fees and $0.5 million and $1.9 million was recorded as debt extinguishment costs in the accompanying consolidated statement of income. The Company also recorded non-cash debt extinguishment costs of $1.9 million and $1.1 million related to the write-off of deferred financing fees associated with the previous credit agreement for the years ended December 31, 2013 and 2012, respectively.

Receivables Facility

The Company is a party to an accounts receivable facility through TSPC, Inc. ("TSPC"), a wholly-owned subsidiary, to sell trade accounts receivable of substantially all of the Company's domestic business operations. During April and November of 2014, the Company amended the $105.0 million facility, resulting in a reduction in the usage fee on amounts outstanding previously ranging from 1.20% or 1.35%, depending on the amounts drawn under the facility, to 1.00%. The amendments also reduced the cost of the unused portion of the facility from 0.40% to 0.35% and extended the maturity date from October 12, 2017 to October 16, 2018.

Under this facility, TSPC, from time to time, may sell an undivided fractional ownership interest in the pool of receivables up to approximately $105.0 million to a third party multi-seller receivables funding company. The net amount financed under the facility is less than the face amount of accounts receivable by an amount that approximates the purchaser's financing costs. The cost of funds under this facility consisted of a 3-month LIBOR plus a usage fee of 1.00% and 1.35% as of December 31, 2014 and 2013, respectively, and a fee on the unused portion of the facility of 0.35% and 0.40% as of December 31, 2014 and 2013, respectively.

The Company had $78.7 million and $57.0 million outstanding under the facility as of December 31, 2014 and 2013, respectively, and $1.6 million and $20.2 million available but not utilized as of December 31, 2014 and 2013, respectively. Aggregate costs incurred under the facility were $1.3 million, $1.4 million and $1.3 million for the years ended December 31, 2014, 2013 and 2012, and are included in interest expense in the accompanying consolidated statement of income.

The cost of funds fees incurred are determined by calculating the estimated present value of the receivables sold compared to their carrying amount. The estimated present value factor is based on historical collection experience and a discount rate based on a 3-month LIBOR-based rate plus the usage fee discussed above and is computed in accordance with the terms of the securitization agreement. As of December 31, 2014, the cost of funds under the facility was based on an average liquidation period of the portfolio of approximately 1.7 months and an average discount rate of 1.8%.

Other Bank Debt

In Australia, the Company's subsidiary is party to a debt agreement which matures on August 31, 2015 and is secured by substantially all the assets of the subsidiary. No amounts were outstanding under this agreement as of December 31, 2014. As of December 31, 2013, $0.7 million was outstanding at an average interest rate 2.7%.

In May 2014, the Company's Dutch subsidiary entered into a credit agreement consisting of a $12.5 million uncommitted working capital facility which matures on May 29, 2015, is subject to interest at LIBOR plus 2.75% per annum and is guaranteed by TriMas. In addition, this Dutch subsidiary is subject to an overdraft facility in conjunction with the uncommitted working capital facility up to $1.0 million, subject to interest at U.S dollar prime rate plus 0.75%. As of December 31, 2014, $0.1 million was outstanding on this facility.

Senior Notes

During the fourth quarter of 2012, the Company redeemed all its remaining outstanding 9³/4% senior secured notes ("Senior Notes"). In conjunction with the redemption, the Company incurred approximately $35.7 million in premium, legal and other transaction advisory fees and approximately $8.1 million in non-cash debt extinguishment costs related to the write-off of deferred financing fees and unamortized discount. The amounts are recorded as debt extinguishment costs in the accompanying consolidated statement of income.

Long-term Debt Maturities

Future maturities of the face value of long-term debt at December 31, 2014 are as follows:



Year Ending December 31:	(dollars in thousands)
2015	$	23,860
2016	23,530
2017	35,000
2018	556,940
Total	$	639,330

Debt Issuance Costs

The Company's unamortized debt issuance costs approximated $7.4 million and $8.7 million at December 31, 2014 and 2013, respectively, and are included in other assets in the accompanying consolidated balance sheet. These amounts consist primarily of legal, accounting and other transaction advisory fees as well as facility fees paid to the lenders. Debt issuance costs for the current and previous term loan facilities and the previous discount on the Senior Notes are amortized using the interest method over the terms of the underlying debt instruments to which these amounts relate. The debt issuance costs for the current and previous revolving credit facilities and the receivables facility are amortized on a straight line basis over the term of the facilities. Amortization expense for these items was approximately $1.9 million, $1.8 million and $2.5 million in 2014, 2013 and 2012, respectively, and is included in interest expense in the accompanying consolidated statement of income.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References+ Details

Derivative Instruments

12 Months Ended

Dec. 31, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivative Instruments

As of December 31, 2014, the Company was party to forward contracts to hedge changes in foreign currency exchange rates with notional amounts of approximately $12.0 million. The Company uses foreign currency forward contracts to mitigate the risk associated with fluctuations in currency rates impacting cash flows related to certain payments for contract manufacturing in its lower-cost manufacturing facilities. The foreign currency forward contracts hedge currency exposure between the Mexican peso and the U.S. dollar and the Thai baht and the Australian dollar and mature at specified monthly settlement dates through June 2015. At inception, the Company designated the foreign currency forward contracts as cash flow hedges.

In December 2012, the Company entered into interest rate swap agreements to fix the LIBOR-based variable portion of the interest rates on its term loan facilities. The term loan A swap agreement fixes the LIBOR-based variable portion of the interest rate, beginning February 2013, on a total of $175.0 million notional amount at 0.74% and expires on October 11, 2017. The term loan B swap agreement fixed the LIBOR-based variable portion of the interest rate, beginning February 2015, on a total of $150.0 million notional amount at 2.05% and expired on October 11, 2019. At inception, the Company designated both swap agreements as cash flow hedges. However, the Company entered into a new Credit Agreement during the fourth quarter of 2013 and, as a result, the term loan B swap was no longer expected to be an effective economic hedge. The Company terminated the interest rate swap and received cash of $3.3 million upon completion of the new Credit Agreement. Up to the date of the new Credit Agreement, the Company utilized hedge accounting, which allows for the effective portion of the interest rate swap to be recorded in accumulated other comprehensive income in the accompanying consolidated balance sheet. At the date of the Credit Agreement, the Company de-designated this swap, which had $2.0 million (net of tax of $1.3 million) of unrealized gain remaining in accumulated other comprehensive income in the accompanying consolidated balance sheet, which was reclassified into earnings during the fourth quarter of 2013.

In March 2012, the Company entered into an interest rate swap agreement to fix the LIBOR-based variable portion of the interest rate on a total of $100.0 million notional amount of its previous term loan B facility. The swap agreement fixed the LIBOR-based variable portion of the interest rate at 1.80% through June 23, 2016. At inception, the Company formally designated this swap agreement as a cash flow hedge. Upon the Company's amendment and restatement of its credit agreement during the fourth quarter of 2012, the Company determined that the interest rate swap was no longer expected to be an effective economic hedge. The Company terminated the interest rate swap and repaid the obligation upon completion of the previous credit agreement. Up to that date, the Company utilized hedge accounting and the effective portion of the interest rate swap was recorded in accumulated other comprehensive income in the accompanying consolidated balance sheet. After that date, the Company de-designated this swap, which had $1.0 million (net of tax of $0.6 million) of unrealized loss remaining in accumulated other comprehensive income, which was being amortized into earnings during the period in which the originally hedged transactions would have affected earnings. However, when the Company entered into a new Credit Agreement during the fourth quarter of 2013, the Company reclassified the remaining $0.6 million (net of tax of $0.4 million) of unrealized loss remaining in accumulated other comprehensive income into earnings.

As of December 31, 2014 and 2013, the fair value carrying amount of the Company's derivatives designated as hedging instruments are recorded as follows:



		Asset / (Liability) Derivatives
	Balance Sheet Caption	December 31, 2014			December 31, 2013
		(dollars in thousands)
Derivatives designated as hedging instruments
Interest rate swap	Other assets	$	1,270		$	2,080
Interest rate swap	Accrued liabilities	(180		)	(360		)
Foreign currency forward contracts	Accrued liabilities	(150		)	—
Total derivatives designated as hedging instruments		$	940		$	1,720

The following tables summarize the income (loss) recognized in accumulated other comprehensive income ("AOCI"), the amounts reclassified from AOCI into earnings and the amounts recognized directly into earnings as of December 31, 2014 and 2013 and for the years ended December 31, 2014, 2013 and 2012:



	Amount of Income (Loss) Recognized in AOCI on Derivative (Effective Portion, net of tax)					Location of Income (Loss) Reclassified from AOCI into Earnings (Effective Portion)	Amount of Income (Loss) Reclassified from AOCI into Earnings
	As of December 31,						Year ended December 31,
	2014			2013			2014			2013		2012
	(dollars in thousands)						(dollars in thousands)
Derivatives designated as hedging instruments
Interest rate swap	$	680		$	1,060	Interest expense	$	(970	)	$	2,510	$	(250	)
Foreign currency forward contracts	$	(70	)	$	—	Cost of sales	$	170		$	—	$	—

Over the next 12 months, the Company expects to reclassify approximately $0.2 million of pre-tax deferred losses from AOCI to interest expense as the related interest payments for the designated interest rate swap are funded and approximately $0.1 million of pre-tax deferred losses from AOCI to cost of sales as the intercompany inventory purchases are settled.



		Amount of Loss Recognized in Earnings on Derivatives
		Year ended December 31,
	Location of Loss Recognized in Earnings on Derivatives	2014		2013			2012
		(dollars in thousands)
Derivatives not designated as hedging instruments
Interest rate swaps	Interest expense	$	—	$	(1,480	)	$	(80	)

Valuations of the interest rate swaps were based on the income approach, which uses observable inputs such as interest rate yield curves and forward currency exchange rates. Fair value measurements and the fair value hierarchy level for the Company's assets and liabilities measured at fair value on a recurring basis as of December 31, 2014 and 2013 are shown below.



	Frequency	Asset / (Liability)			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
		(dollars in thousands)
December 31, 2014
Interest rate swap	Recurring	$	1,090		$	—	$	1,090		$	—
Foreign currency forward contracts	Recurring	$	(150	)	$	—	$	(150	)	$	—
December 31, 2013
Interest rate swap	Recurring	$	1,720		$	—	$	1,720		$	—

- Definition

The entire disclosure for derivative instruments and hedging activities including, but not limited to, risk management strategies, non-hedging derivative instruments, assets, liabilities, revenue and expenses, and methodologies and assumptions used in determining the amounts.

+ References

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+ Details

Leases

12 Months Ended

Dec. 31, 2014

Leases [Abstract]

Leases of Lessee Disclosure

Leases

The Company leases certain equipment and facilities under non-cancelable operating leases. Rental expense for the Company totaled approximately $31.5 million in 2014, $29.4 million in 2013 and $22.6 million in 2012.

Minimum payments for operating leases having initial or remaining non-cancelable lease terms in excess of one year at December 31, 2014, including approximately $2.4 million annually related to discontinued operations, are summarized below:



Year ended December 31,	(dollars in thousands)
2015	$	29,670
2016	29,100
2017	26,690
2018	23,390
2019	20,280
Thereafter	44,830
Total	$	173,960

- Definition

The entire disclosure for lessee entity's leasing arrangements including, but not limited to, all of the following: (a.) The basis on which contingent rental payments are determined, (b.) The existence and terms of renewal or purchase options and escalation clauses, (c.) Restrictions imposed by lease agreements, such as those concerning dividends, additional debt, and further leasing.

+ References+ Details

Commitments and Contingencies

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Environmental

The Company is subject to increasingly stringent environmental laws and regulations, including those relating to air emissions, wastewater discharges and chemical and hazardous waste management and disposal. Some of these environmental laws hold owners or operators of land or businesses liable for their own and for previous owners' or operators' releases of hazardous or toxic substances or wastes. Other environmental laws and regulations require the obtainment and compliance with environmental permits. To date, costs of complying with environmental, health and safety requirements have not been material. However, the nature of the Company's operations and the long history of industrial activities at certain of the Company's current or former facilities, as well as those acquired, could potentially result in material environmental liabilities.

While the Company must comply with existing and pending climate change legislation, regulation and international treaties or accords, current laws and regulations have not had a material impact on the Company's business, capital expenditures or financial position. Future events, including those relating to climate change or greenhouse gas regulation could require the Company to incur expenses related to the modification or curtailment of operations, installation of pollution control equipment or investigation and cleanup of contaminated sites.

Asbestos

As of December 31, 2014, the Company was a party to 1,109 pending cases involving an aggregate of 7,992 claimants primarily alleging personal injury from exposure to asbestos containing materials formerly used in gaskets (both encapsulated and otherwise) manufactured or distributed by certain of its subsidiaries for use primarily in the petrochemical refining and exploration industries. The following chart summarizes the number of claimants, number of claims filed, number of claims dismissed, number of claims settled, the average settlement amount per claim and the total defense costs, excluding amounts reimbursed under the Company's primary insurance, at the applicable date and for the applicable periods:



	Claims pending at beginning of period	Claims filed during period	Claims dismissed during period	Claims settled during period	Average settlement amount per claim during period		Total defense costs during period
Fiscal year ended December 31, 2012	8,048	367	519	16	$	14,513	$	2,650,000
Fiscal year ended December 31, 2013	7,880	360	226	39	$	8,294	$	2,620,000
Fiscal year ended December 31, 2014	7,975	210	155	38	$	18,734	$	2,800,000

In addition, the Company acquired various companies to distribute its products that had distributed gaskets of other manufacturers prior to acquisition. The Company believes that many of the pending cases relate to locations at which none of its gaskets were distributed or used.

The Company may be subjected to significant additional asbestos-related claims in the future, the cost of settling cases in which product identification can be made may increase, and the Company may be subjected to further claims in respect of the former activities of its acquired gasket distributors. The Company is unable to make a meaningful statement concerning the monetary claims made in the asbestos cases given that, among other things, claims may be initially made in some jurisdictions without specifying the amount sought or by simply stating the requisite or maximum permissible monetary relief, and may be amended to alter the amount sought. The large majority of claims do not specify the amount sought. Of the 7,992 claims pending at December 31, 2014, 117 set forth specific amounts of damages (other than those stating the statutory minimum or maximum).

Below is a breakdown of the amount sought for those claims seeking specific amounts:

Compensatory & Punitive

Compensatory Only

Punitive Only

Range of damages sought (in millions)

$0.0 to $5.0

$5.0 to $10.0

$10.0+

$0.0 to $0.6

$0.6 to $5.0

$5.0+

$0.0 to $2.5

$2.5 to $5.0

$5.0+

Number of claims

111

In addition, relatively few of the claims have reached the discovery stage and even fewer claims have gone past the discovery stage.

Total settlement costs (exclusive of defense costs) for all such cases, some of which were filed over 20 years ago, have been approximately $7.4 million. All relief sought in the asbestos cases is monetary in nature. To date, approximately 40% of the Company's costs related to settlement and defense of asbestos litigation have been covered by its primary insurance. Effective February 14, 2006, the Company entered into a coverage-in-place agreement with its first level excess carriers regarding the coverage to be provided to the Company for asbestos-related claims when the primary insurance is exhausted. The coverage-in-place agreement makes asbestos defense costs and indemnity insurance coverage available to the Company that might otherwise be disputed by the carriers and provides a methodology for the administration of such expenses. Nonetheless, the Company believes it is likely that there will be a period within the next one or two years, prior to the commencement of coverage under this agreement and following exhaustion of the Company's primary insurance coverage, during which the Company likely will be solely responsible for defense costs and indemnity payments, the duration of which would be subject to the scope of damage awards and settlements paid.

Based on the settlements made to date and the number of claims dismissed or withdrawn for lack of product identification, the Company believes that the relief sought (when specified) does not bear a reasonable relationship to its potential liability. Based upon the Company's experience to date, including the trend in annual defense and settlement costs incurred to date, and other available information (including the availability of excess insurance), the Company does not believe that these cases will have a material adverse effect on its financial position and results of operations or cash flows.

Metaldyne Corporation

Prior to June 6, 2002, the Company was wholly-owned by Metaldyne Corporation ("Metaldyne"). In connection with the reorganization between TriMas and Metaldyne in June 2002, TriMas assumed certain liabilities and obligations of Metaldyne, mainly comprised of contractual obligations to former TriMas employees, tax related matters, benefit plan liabilities and reimbursements to Metaldyne of normal course payments to be made on TriMas' behalf.

On January 11, 2007, Metaldyne merged into a subsidiary of Asahi Tec Corporation (“Asahi”) whereby Metaldyne became a wholly-owned subsidiary of Asahi. In connection with the consummation of the merger, Metaldyne dividended the 4,825,587 shares of the Company's common stock that it owned on a pro rata basis to the holders of Metaldyne's common stock at the time of such dividend. As a result of the merger, Metaldyne and the Company were no longer related parties. In addition, as a result of the merger, it has been asserted that Metaldyne may be obligated to accelerate funding and payment of actuarially determined amounts owing to seven former Metaldyne executives under a supplemental executive retirement plan (“SERP”). Under the stock purchase agreement between Metaldyne and Heartland Industrial Partners (“Heartland”), TriMas is required to reimburse Metaldyne, when billed, for its allocated portion of the amounts due to certain Metaldyne SERP participants, as defined. At December 31, 2014, TriMas has accrued an estimated liability to Metaldyne on its reported balance sheet of approximately $6.7 million. However, if Metaldyne is required to accelerate funding of the SERP liability, TriMas may be obligated to reimburse Metaldyne up to approximately $9.1 million, which could result in future charges to the Company's statement of income of up to $2.4 million.

Additionally, on May 28, 2009, Metaldyne and its U.S. subsidiaries filed voluntary petitions in the United States Bankruptcy Court under Chapter 11 of the U.S. Bankruptcy Code. On February 23, 2010, the U.S. Bankruptcy Court confirmed the reorganization plan of Metaldyne and its U.S. subsidiaries. The Company continues to evaluate the impact of Metaldyne's reorganization plans on its estimated SERP obligations to Metaldyne.

Subject to certain limited exceptions, Metaldyne and TriMas retained separate liabilities associated with the respective businesses following the reorganization in June 2002. Accordingly, the Company will indemnify and hold Metaldyne harmless from all liabilities associated with TriMas and its subsidiaries and the respective operations and assets, whenever conducted, and Metaldyne will indemnify and hold harmless Heartland and TriMas from all liabilities associated with Metaldyne and its subsidiaries (excluding TriMas and its subsidiaries) and their respective operations and assets, whenever conducted. In addition, TriMas agreed with Metaldyne to indemnify one another for its allocated share (42.01% with respect to TriMas and 57.99% with respect to Metaldyne) of liabilities not readily associated with either business, or otherwise addressed including certain costs related to other matters intended to effectuate other provisions of the agreement. These indemnification provisions survive indefinitely and are subject to a $50,000 deductible.

Ordinary Course Claims

The Company is subject to other claims and litigation in the ordinary course of business, but does not believe that any such claim or litigation is likely to have a material adverse effect on its financial position and results of operations or cash flows.

- Definition

The entire disclosure for commitments and contingencies.

+ References+ Details

Employee Benefit Plans

12 Months Ended

Dec. 31, 2014

Compensation and Retirement Disclosure [Abstract]

Employee Benefit Plans

Pension and Profit-Sharing Benefits

The Company provides a defined contribution profit sharing plan for the benefit of substantially all the Company's domestic salaried and non-union hourly employees. The plan contains both contributory and noncontributory profit sharing arrangements, as defined. Aggregate charges included in the accompanying statement of income under this plan for both continuing and discontinued operations were approximately $5.8 million, $5.6 million and $5.4 million in 2014, 2013 and 2012, respectively. Certain of the Company's foreign and union hourly employees participate in defined benefit pension plans.

Postretirement Benefits

The Company provides postretirement medical and life insurance benefits, none of which are pre-funded, for certain of its retired employees.

Plan Assets, Expenses and Obligations

Plan assets, expenses and obligations for pension and postretirement benefit plans disclosed herein include both continuing and discontinued operations.

Net periodic pension and postretirement benefit expense (income) recorded in the Company's statement of income for defined benefit pension plans and postretirement benefit plans include the following components:



	Pension Benefit									Postretirement Benefit
	2014			2013			2012			2014			2013			2012
	(dollars in thousands)
Service cost	$	760		$	680		$	600		$	—		$	—		$	—
Interest cost	1,760			1,610			1,620			30			40			50
Expected return on plan assets	(2,070		)	(1,810		)	(1,720		)	—			—			—
Amortization of prior-service cost	—			—			—			—			—			(200		)
Settlement/curtailment	—			—			190			—			—			(1,490		)
Amortization of net (gain)/loss	1,120			1,280			1,070			(90		)	(80		)	(80		)
Net periodic benefit expense (income)	$	1,570		$	1,760		$	1,760		$	(60	)	$	(40	)	$	(1,720	)

The estimated net actuarial loss and prior service cost for the defined benefit pension and postretirement benefit plans that is expected to be amortized from accumulated other comprehensive income into net periodic benefit cost in 2015 is approximately $1.5 million.

Actuarial valuations of the Company's defined benefit pension and postretirement plans were prepared as of December 31, 2014, 2013 and 2012. Weighted-average assumptions used in accounting for the U.S. defined benefit pension plans and postretirement benefit plans are as follows:



	Pension Benefit						Postretirement Benefit
	2014		2013		2012		2014		2013		2012
Discount rate for obligations	4.17	%	5.01	%	4.24	%	3.89	%	4.48	%	3.69	%
Discount rate for benefit costs	5.01	%	4.24	%	4.78	%	4.48	%	3.69	%	4.54	%
Rate of increase in compensation levels	N/A		N/A		N/A		N/A		N/A		N/A
Expected long-term rate of return on plan assets	7.50	%	7.50	%	7.75	%	N/A		N/A		N/A

The Company utilizes a high-quality (Aa) corporate bond yield curve as the basis for its domestic discount rate for its pension and postretirement benefit plans. Management believes this yield curve removes the impact of including additional required corporate bond yields (potentially considered in the above-median curve) resulting from the uncertain economic climate that does not necessarily reflect the general trend in high-quality interest rates.

Actuarial valuations of the Company's non-U.S. defined benefit pension plans were prepared as of December 31, 2014, 2013 and 2012. Weighted-average assumptions used in accounting for the non-U.S. defined benefit pension plans are as follows:



	Pension Benefit
	2014		2013		2012
Discount rate for obligations	3.70	%	4.50	%	4.50	%
Discount rate for benefit costs	4.50	%	4.50	%	4.80	%
Rate of increase in compensation levels	3.80	%	4.10	%	3.70	%
Expected long-term rate of return on plan assets	5.60	%	5.40	%	5.50	%

The Company reviews the employee demographic assumptions annually and updates these assumptions as necessary. During, 2014, the mortality assumptions were updated to incorporate a new set of mortality tables. This resulted in an increase in the projected benefit obligation of the Company's defined benefit pension and postretirement benefit plans.

The following provides a reconciliation of the changes in the Company's defined benefit pension and postretirement benefit plans' projected benefit obligations and fair value of assets for each of the years ended December 31, 2014 and 2013 and the funded status as of December 31, 2014 and 2013:



	Pension Benefit						Postretirement Benefit
	2014			2013			2014			2013
	(dollars in thousands)
Changes in Projected Benefit Obligations
Benefit obligations at January 1	$	(38,230	)	$	(38,730	)	$	(810	)	$	(970	)
Service cost	(760		)	(680		)	—			—
Interest cost	(1,760		)	(1,610		)	(30		)	(40		)
Participant contributions	(60		)	(60		)	—			—
Actuarial gain (loss)	(6,470		)	1,280			100			170
Benefit payments	2,230			1,850			80			30
Change in foreign currency	1,320			(280		)	—			—
Projected benefit obligations at December 31	(43,730		)	(38,230		)	(660		)	(810		)
Changes in Plan Assets
Fair value of plan assets at January 1	$	31,780		$	27,860		$	—		$	—
Actual return on plan assets	1,830			2,270			—			—
Employer contributions	2,340			3,240			80			30
Participant contributions	60			60			—			—
Benefit payments	(2,230		)	(1,850		)	(80		)	(30		)
Change in foreign currency	(1,170		)	200			—			—
Fair value of plan assets at December 31	32,610			31,780			—			—
Funded status at December 31	$	(11,120	)	$	(6,450	)	$	(660	)	$	(810	)



	Pension Benefit						Postretirement Benefit
	2014			2013			2014			2013
	(dollars in thousands)
Amounts Recognized in Balance Sheet
Prepaid benefit cost	$	790		$	980		$	—		$	—
Current liabilities	(320		)	(410		)	(70		)	(90		)
Noncurrent liabilities	(11,590		)	(7,020		)	(590		)	(720		)
Net liability recognized at December 31	$	(11,120	)	$	(6,450	)	$	(660	)	$	(810	)



	Pension Benefit				Postretirement Benefit
	2014		2013		2014			2013
	(dollars in thousands)
Amounts Recognized in Accumulated Other Comprehensive (Income) Loss
Unrecognized prior-service cost	$	90	$	110	$	—		$	—
Unrecognized net loss/(gain)	21,420		16,420		(670		)	(670		)
Total accumulated other comprehensive (income) loss recognized at December 31	$	21,510	$	16,530	$	(670	)	$	(670	)



	Pension Benefit						Postretirement Benefit
	2014			2013			2014			2013
	(dollars in thousands)
Benefit Obligation in Excess of Plan Assets
Accumulated benefit obligations at December 31	$	(40,630	)	$	(20,200	)	$	(660	)	$	(810	)
Plans with Benefit Obligation Exceeding Plan Assets
Benefit obligation	$	(42,910	)	$	(37,430	)	$	(660	)	$	(810	)
Plan assets	31,000			30,000			—			—
Benefit obligation in excess of plan assets	$	(11,910	)	$	(7,430	)	$	(660	)	$	(810	)

The assumptions regarding discount rates and expected return on plan assets can have a significant impact on amounts reported for benefit plans. A 25 basis point change in benefit obligation discount rates or 50 basis point change in expected return on plan assets would have the following affect:



	December 31, 2014 Benefit Obligation						2014 Expense
	Pension			Postretirement Benefit			Pension			Postretirement Benefit
	(dollars in thousands)
Discount rate
25 basis point increase	$	(1,580	)	$	(20	)	$	(140	)	$	—
25 basis point decrease	$	1,650		$	20		$	150		—
Expected return on assets
50 basis point increase	N/A			N/A			$	(170	)	N/A
50 basis point decrease	N/A			N/A			$	170		N/A

The Company expects to make contributions of approximately $3.5 million to fund its pension plans and $0.1 million to fund its postretirement benefit plans during 2015.

Plan Assets

The Company's overall investment goal is to provide for capital growth with a moderate level of volatility by investing assets in targeted allocation ranges. Specific long term investment goals include total investment return, diversity to reduce volatility and risk, and to achieve an asset allocation profile that reflects the general nature and sensitivity of the plans' liabilities. Investment goals are established after a comprehensive review of current and projected financial statement requirements, plan assets and liability structure, market returns and risks as well as special requirements of the plans. The Company reviews investment goals and actual results annually to determine whether stated objectives are still relevant and the continued feasibility of achieving the objectives.

The actual weighted average asset allocation of the Company's domestic and foreign pension plans' assets at December 31, 2014 and 2013 and target allocations by class, were as follows:



	Domestic Pension						Foreign Pension
			Actual						Actual
	Target		2014		2013		Target		2014		2013
Equity securities	50%-70%		63	%	61	%	55	%	52	%	57	%
Fixed income securities	30%-50%		35	%	36	%	45	%	48	%	42	%
Cash and cash equivalents	—		2	%	3	%	—		—	%	1	%
Total	100	%	100	%	100	%	100	%	100	%	100	%

Actual allocations to each asset vary from target allocations due to periodic investment strategy changes, market value fluctuations and the timing of benefit payments and contributions. The expected long-term rate of return for both the domestic and foreign plans' total assets is based on the expected return of each of the above categories, weighted based on the target allocation for each class. Actual allocation is reviewed regularly and rebalancing investments to their targeted allocation range is performed when deemed appropriate.

In managing the plan assets, the Company reviews and manages risk associated with the funded status risk, interest rate risk, market risk, liquidity risk and operational risk. Investment policies reflect the unique circumstances of the respective plans and include requirements designed to mitigate these risks by including quality and diversification standards.

The following table summarizes the level under the fair value hierarchy (see Note 3, "Summary of Significant Accounting Policies") that the Company's pension plan assets are measured on a recurring basis as of December 31, 2014:



	Total		Level 1		Level 2		Level 3
Equity Securities
Investment funds	$	18,220	$	—	$	18,220	$	—
Fixed Income Securities
Investment funds	8,610		—		8,610		—
Government bonds	2,080		—		2,080		—
Government agencies	30		—		30		—
Corporate bonds	1,890		—		1,890		—
Other^(a)	1,270		—		1,270		—
Cash and cash equivalents
Short term investment funds	510		130		380		—
Total	$	32,610	$	130	$	32,480	$	—

________________________________________

^(a) Comprised of mortgage-backed, asset backed securities and non-government backed c.m.o.s

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid:



	Pension Benefit		Postretirement Benefit
	(dollars in thousands)
December 31, 2015	$	1,720	$	70
December 31, 2016	1,770		70
December 31, 2017	1,820		60
December 31, 2018	1,940		50
December 31, 2019	2,010		50
Years 2019-2024	10,890		200

The assumed health care cost trend rate used for purposes of calculating the Company's postretirement benefit obligation in 2014 was 8.0% for pre-65 plan participants, decreasing to an ultimate rate of 5.0% in 2022 and 7.5% for post-65 plan participants, decreasing to an ultimate rate of 5.0% in 2020. A one-percentage point change in the assumed health care cost trend would have the following effects:



	One Percentage-Point Increase		One Percentage-Point Decrease
	(dollars in thousands)
Effect on total service and interest cost	$	—	$	—
Effect on postretirement benefit obligation	50		(40		)

- Definition

The entire disclosure for pension and other postretirement benefits.

+ References+ Details

Equity Awards

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Equity Awards

The Company maintains the following long-term equity incentive plans (collectively, the "Plans"):



Plan Names	Shares Approved for Issuance	Fungible Ratio
TriMas Corporation Director Retainer Share Election Program	100,000	N/A
2011 Omnibus Incentive Compensation Plan	2,850,000	1.75:1
2006 Long Term Equity Incentive Plan	2,435,877	2:1
2002 Long Term Equity Incentive Plan	1,786,123	1:1

The fungible ratio presented above applies to restricted shares of common stock. Stock options and stock appreciation rights have a fungible ratio of 1:1 (one granted option/appreciation right counts as one share against the aggregate available to issue) under each Plan, if applicable. In addition, the 2002 Long Term Equity Incentive Plan expired in 2012, such that, while existing grants will remain outstanding until exercised, vested or canceled, no new shares may be issued under the plan.

Stock Options

The Company did not grant any stock options during 2014, 2013 and 2012.

Information related to stock options at December 31, 2014 is as follows:



	Number of Stock Options		Weighted Average Option Price		Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding at January 1, 2014	342,448		$	9.92
Exercised	(90,781	)	19.72
Cancelled	—		—
Expired	—		—
Outstanding at December 31, 2014	251,667		$	6.39	3.5	$	6,266,389

As of December 31, 2014, 251,667 stock options were exercisable under the Plans. During 2014, 800 stock options vested in which the associated fair value was less than $0.1 million. The fair value of options which vested during the years ended December 31, 2013 and 2012 was $0.1 million and $0.4 million, respectively.

The Company did not incur significant stock-based compensation expense related to stock options during the years ended December 31, 2014, 2013 and 2012.

Restricted Shares

The Company awarded 2,200 restricted stock grants to certain employees during 2014. These shares are subject only to a service condition and vest on the first anniversary date of the award so long as the employee remains with the Company.

During 2014, 2013 and 2012, the Company issued 23,226, 29,498 and 19,532 shares, respectively, of its common stock to certain employees which are subject only to a service condition and vest ratably over three years so long as the employee remains with the Company.

The Company awarded 40,837, 41,480 and 60,665 restricted shares of common stock to certain employees during 2014, 2013 and 2012, respectively. These shares are subject only to a service condition and vest on the first anniversary date of the award. The awards were made to participants in the Company's Short-Term Incentive Compensation Plan ("STI"), where all STI participants whose target STI annual award exceeds $20 thousand receive 80% of the value in earned cash and 20% in the form of a restricted stock award upon finalization of the award amount in the first quarter each year, following the previous plan year.

The Company also awarded 243,124 restricted shares of common stock to certain Company key employees during the first quarter of 2014. Half of the restricted shares granted are service-based restricted stock units. These awards vest ratably over three years. The other half of the shares are subject to a performance condition and are earned based upon the achievement of two performance metrics over a period of three calendar years, beginning on January 1, 2014 and ending on December 31, 2016. Of this award, 75% of the awards are earned based upon the Company's earnings per share ("EPS") cumulative average growth rate ("EPS CAGR") over the performance period. The remaining 25% of the grants are earned based upon the Company's three-year average return on invested capital ("ROIC"). ROIC is defined as the Company's after-tax operating profit, as publicly reported by the Company, plus or minus special items that may occur from time-to-time, divided by the Company's last five-quarter average of invested capital. Invested capital is comprised of the Company's long-term debt plus shareholders' equity plus non-controlling interest, less cash held. Depending on the performance achieved for these two metrics, the amount of shares earned can vary from 30% of the target award to a maximum amount of 200% of the target award for the ROIC metric and 250% of the target award for the EPS CAGR metric. However, if these performance metrics are not achieved, no award will be earned. The performance awards vest on a cliff basis at the end of the three-year performance period.

The Company awarded 238,808 and 206,064 restricted shares to certain Company key employees during 2013 and 2012. Half of the restricted shares granted are service-based restricted stock units. These awards vest ratably over three years. The other half of the shares are subject to a performance condition and are earned based upon the achievement of two performance metrics over a period of three calendar years. Of this award, 75% of the awards are earned based upon the Company's earnings per share ("EPS") cumulative average growth rate ("EPS CAGR") over the performance period. The remaining 25% of the grants are earned based upon the Company's cash generation results. Cash generation is defined as the Company's cumulative three year cash flow from operating activities less capital expenditures, as publicly reported by the Company, plus or minus special items that may occur from time-to-time, divided by the Company's three-year income from continuing operations as publicly reported by the Company, plus or minus special items that may occur from time-to-time. Depending on the performance achieved for these two metrics, the amount of shares earned can vary from 30% of the target award to a maximum amount of 200% of the target award for the cash flow metric and 250% of the target award for the EPS CAGR metric. The performance awards vest on a cliff basis at the end of the three-year performance period.

During 2012, the Company also awarded 166,530 restricted shares to certain Company key employees which are performance-based grants. Of this award, 60% are earned based on 2012 earnings per share growth, and the remaining 40% are earned based on the EPS CAGR for 2012 and 2013. Depending on the performance achieved for these two specific metrics, the amount of shares earned can vary from 30% of the target award to a maximum amount of 250% of the target award. For the 60% of shares subject to the 2012 earnings per share growth metric only, the performance conditions were satisfied, resulting in an attainment level of 175% of target. This resulted in an additional 72,576 share grants during the first quarter of 2013. For the 40% of shares subject to the 2012-2013 EPS CAGR metric, the performance conditions were satisfied, resulting in an attainment level of 125% of target. This resulted in an additional 16,054 shares granted during 2014.

In addition, during 2014, 2013 and 2012, the Company granted 20,832, 17,240 and 16,440 shares, respectively, of its common stock to its non-employee independent directors, which vest one year from date of grant so long as the director and/or Company does not terminate his services prior to the vesting date.

The Company allows for its non-employee independent directors to make an annual election to defer all or a portion of their director fees and to receive the deferred amount in cash or equity. Certain of the Company's directors have elected to defer all or a portion of their director fees and to receive the amount in Company common stock at a future date. The Company issued 10,140, 5,215 and 7,979 shares in 2014, 2013 and 2012, respectively, related to director fee deferrals.

The Company also awarded 81,680 restricted shares to certain Company officers during 2011. Half of the shares are subject to a performance condition and are earned based upon the Company achieving at least $2.00 of cumulative earnings per share for any consecutive four financial quarters beginning April 1, 2011 through September 30, 2013, where 50% of the restricted shares vest on the business day immediately following the release of earnings for the quarter in which the EPS performance measure is met (the "EPS Vesting Date") and the remaining 50% vest in two equal parts on the first and second anniversary of the EPS Vesting Date, all subject to continued employment as of each vesting date. The other half of the shares are subject to market conditions and are earned based upon the Company's stock price closing at or above each of $30 and $35 per share for 30 consecutive trading days (20,420 shares subject to each target stock price), with the last such trading day occurring on or prior to September 30, 2013. Once the target stock price is met, 50% of the restricted shares immediately vest and the remaining 50% vest in two equal parts on the first and second anniversary of the date on which the respective trading threshold is met, all subject to continued employment as of each vesting date. The Company estimated the grant-date fair value and estimated term of the awards subject to a market condition using a Monte Carlo simulation model, using the following weighted-average assumptions: risk-free interest rate of 1.0% and expected volatility of 70%. During 2013, the Company achieved the performance conditions for the restricted shares and the market conditions were satisfied.

Information related to restricted shares at December 31, 2014 is as follows:



	Number of Unvested Restricted Shares		Weighted Average Grant Date Fair Value		Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding at January 1, 2014	654,400		$	26.00
Granted	356,413		33.17
Vested	(262,714	)	25.53
Cancelled	(22,640	)	29.51
Outstanding at December 31, 2014	725,459		$	29.59	0.9	$	22,699,612

As of December 31, 2014, there was approximately $6.9 million of unrecognized compensation cost related to unvested restricted shares that is expected to be recorded over a weighted-average period of 1.9 years.

The Company recognized stock-based compensation expense related to restricted shares of approximately $7.4 million, $9.2 million and $9.3 million for the years ended December 31, 2014, 2013, and 2012, respectively. The stock-based compensation expense is included in selling, general and administrative expenses in the accompanying statement of income.

- Definition

The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details.

+ References+ Details

Other Comprehensive Income (Notes)

12 Months Ended

Dec. 31, 2014

Other Comprehensive Income [Abstract]

Other Comprehensive Income

Changes in AOCI by component for the year ended December 31, 2014 are summarized as follows, net of tax:



	Defined Benefit Plans			Derivative Instruments			Foreign Currency Translation			Total
	(dollars in thousands)
Balance, December 31, 2013	$	(10,840	)	$	1,060		$	37,610		$	27,830
Net unrealized losses arising during the period	(4,040		)	(900		)	(15,090		)	(20,030		)
Less: Net realized losses reclassified to net income ^(a)	(700		)	(450		)	(1,270		)	(2,420		)
Net current-period change	(3,340		)	(450		)	(13,820		)	(17,610		)
Balance, December 31, 2014	$	(14,180	)	$	610		$	23,790		$	10,220

__________________________

^(a)Defined benefit plans, net of income tax expense of $0.3 million. See Note 16, "Employee Benefit Plans," for additional details. Derivative instruments, net of income tax expense of $0.3 million. See Note 13, "Derivative Instruments," for further details.

The Company reclassified approximately $1.3 million of foreign currency translation losses from AOCI into net income related to the restructuring of business during the year ended December 31, 2014. See Note 7, "Facility Closures and Sale of Business," for additional details.

Changes in AOCI by component for the year ended December 31, 2013 are summarized as follows, net of tax:



	Defined Benefit Plans			Derivative Instruments			Foreign Currency Translation			Total
	(dollars in thousands)
Balance, December 31, 2012	$	(12,440	)	$	(1,680	)	$	53,380		$	39,260
Net unrealized gains (losses) arising during the period	800			3,370			(7,860		)	(3,690		)
Less: Net realized gains (losses) reclassified to net income ^(a)	(800		)	630			7,910			7,740
Net current-period change	1,600			2,740			(15,770		)	(11,430		)
Balance, December 31, 2013	$	(10,840	)	$	1,060		$	37,610		$	27,830

__________________________

^(a) Defined benefit plans, net of income tax expense of $0.4 million. See Note 16, "Employee Benefit Plans," for additional details. Derivative instruments, net of income tax expense of $0.4 million. See Note 13, "Derivative Instruments," for further details.

The Company reclassified approximately $7.9 million of foreign currency translation gains from AOCI into net income related to the sale of a business during the year ended December 31, 2013. See Note 7, "Facility Closures and Sale of Business," for additional details.

- Definition

The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income.

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+ Details

Segment Information

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Segment Information

TriMas groups its operating segments into reportable segments that provide similar products and services. Each operating segment has discrete financial information evaluated regularly by the Company's chief operating decision maker in determining resource allocation and assessing performance. Within these reportable segments, there are no individual products or product families for which reported net sales accounted for more than 10% of the Company's consolidated net sales. For purposes of this Note, the Company defines operating net assets as total assets less current liabilities. See below for more information regarding the types of products and services provided within each reportable segment:

Packaging-Highly engineered closure and dispensing systems for a range of end markets, including steel and plastic industrial and consumer packaging applications.

Energy-Metallic and non-metallic industrial sealant products and fasteners for the petroleum refining, petrochemical and other industrial markets.

Aerospace-Permanent blind bolts, temporary fasteners, highly engineered specialty fasteners and other precision machined parts used in the commercial, business and military aerospace industries.

Engineered Components-High-pressure and low-pressure cylinders for the transportation, storage and dispensing of compressed gases, and natural gas engines, compressors, gas production equipment and chemical pumps engineered at well sites for the oil and gas industry.

Cequent APEA & Cequent Americas-Custom-engineered towing, trailering and electrical products including trailer couplers, winches, jacks, trailer brakes and brake control solutions, lighting accessories and roof racks for the recreational vehicle, agricultural/utility, marine, automotive and commercial trailer markets, functional vehicle accessories and cargo management solutions including vehicle hitches and receivers, sway controls, weight distribution and fifth-wheel hitches, hitch-mounted accessories and other accessory components.

Segment activity is as follows:



	Year ended December 31,
	2014			2013			2012
	(dollars in thousands)
Net Sales
Packaging	$	337,710		$	313,220		$	275,160
Energy	206,720			205,580			190,210
Aerospace	121,510			95,530			73,180
Engineered Components	221,360			185,370			200,000
Cequent APEA	165,110			151,620			128,560
Cequent Americas	446,670			437,280			400,400
Total	$	1,499,080		$	1,388,600		$	1,267,510
Operating Profit (Loss)
Packaging	$	77,850		$	83,770		$	57,550
Energy	(6,660		)	8,620			17,810
Aerospace	17,830			22,830			21,020
Engineered Components	34,080			19,450			27,990
Cequent APEA	7,860			13,920			12,300
Cequent Americas	31,090			8,850			27,420
Corporate	(37,500		)	(37,840		)	(36,020		)
Total	$	124,550		$	119,600		$	128,070
Capital Expenditures
Packaging	$	13,730		$	11,010		$	15,470
Energy	2,690			5,250			5,210
Aerospace	4,430			4,810			3,210
Engineered Components	1,690			2,190			4,090
Cequent APEA	6,910			9,650			8,290
Cequent Americas	4,530			5,610			9,670
Corporate	470			970			180
Total	$	34,450		$	39,490		$	46,120
Depreciation and Amortization
Packaging	$	20,410		$	18,960		$	17,970
Energy	4,600			3,820			3,600
Aerospace	7,630			3,790			2,630
Engineered Components	4,460			4,270			3,860
Cequent APEA	7,520			5,770			3,840
Cequent Americas	11,410			13,680			12,780
Corporate	440			260			160
Total	$	56,470		$	50,550		$	44,840



	Year ended December 31,
	2014			2013		2012
	(dollars in thousands)
Operating Net Assets
Packaging	$	398,530		$	377,480	$	376,040
Energy	170,430			180,410		158,710
Aerospace	498,560			150,750		80,620
Engineered Components	65,910			73,780		68,870
Cequent APEA	75,290			81,120		51,790
Cequent Americas	151,760			164,590		145,360
Corporate	(8,650		)	11,140		2,370
Total operating net assets	1,351,830			1,039,270		883,760
Current liabilities	309,920			261,510		247,200
Consolidated assets	$	1,661,750		$	1,300,780	$	1,130,960

The following table presents the Company's revenues for each of the years ended December 31 and operating net assets at each year ended December 31, attributed to each subsidiary's continent of domicile. Other than Australia, there was no single non-U.S. country for which net sales and net assets were significant to the combined net sales and net assets of the Company taken as a whole.



	As of December 31,
	2014				2013				2012
	Net Sales		Operating Net Assets		Net Sales		Operating Net Assets		Net Sales		Operating Net Assets
	(dollars in thousands)
Non-U.S.
Europe	$	120,690	$	97,670	$	97,500	$	136,490	$	62,400	$	102,250
Australia	88,820		38,700		97,580		27,080		100,620		32,400
Asia	46,810		92,470		44,870		59,120		32,230		38,130
Africa	8,800		4,290		3,310		4,770		4,180		3,090
Other Americas	45,950		53,780		46,210		83,080		34,090		68,660
Total non-U.S	311,070		286,910		289,470		310,540		233,520		244,530

Total U.S.	1,188,010		1,064,920		1,099,130		728,730		1,033,990		639,230
Total	$	1,499,080	$	1,351,830	$	1,388,600	$	1,039,270	$	1,267,510	$	883,760

The Company's export sales from the U.S. approximated $131.8 million, $123.7 million and $139.7 million in 2014, 2013 and 2012, respectively.

- Definition

The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments.

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+ Details

Income Taxes

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Income Tax Disclosure

Income Taxes

The Company's income before income taxes and income tax expense for continuing operations, each by tax jurisdiction, consisted of the following:



	Year ended December 31,
	2014			2013			2012
	(dollars in thousands)
Income before income taxes:
Domestic	$	85,000		$	49,480		$	12,150
Foreign	14,600			47,610			30,340
Total income before income taxes	$	99,600		$	97,090		$	42,490
Current income tax expense:
Federal	$	31,150		$	15,850		$	8,340
State and local	3,450			1,440			1,860
Foreign	6,890			9,650			4,190
Total current income tax expense	41,490			26,940			14,390
Deferred income tax expense (benefit):
Federal	(9,170		)	(4,490		)	(6,200		)
State and local	350			(1,020		)	(750		)
Foreign	200			(3,290		)	(1,380		)
Total deferred income tax expense	(8,620		)	(8,800		)	(8,330		)
Income tax expense	$	32,870		$	18,140		$	6,060

The components of deferred taxes at December 31, 2014 and 2013 are as follows:



	2014			2013
	(dollars in thousands)
Deferred tax assets:
Accounts receivable	$	1,710		$	1,240
Inventories	9,680			7,840
Accrued liabilities and other long-term liabilities	45,750			40,410
Tax loss and credit carryforwards	17,530			10,010
Gross deferred tax asset	74,670			59,500
Valuation allowances	(9,820		)	(6,530		)
Net deferred tax asset	64,850			52,970
Deferred tax liabilities:
Property and equipment	(19,640		)	(20,420		)
Goodwill and other intangible assets	(64,400		)	(66,440		)
Other, principally deferred income	(5,230		)	(6,310		)
Gross deferred tax liability	(89,270		)	(93,170		)
Net deferred tax liability	$	(24,420	)	$	(40,200	)

The following is a reconciliation of income tax expense computed at the U.S. federal statutory rate to income tax expense allocated to income from continuing operations before income taxes:



	2014			2013			2012
	(dollars in thousands)
U.S. federal statutory rate	35		%	35		%	35		%
Tax at U.S. federal statutory rate	$	34,860		$	33,990		$	14,880
State and local taxes, net of federal tax benefit	2,750			250			730
Differences in statutory foreign tax rates	(3,910		)	(8,550		)	(4,920		)
Change in recognized tax benefits	(1,960		)	(1,630		)	(1,320		)
Tax holiday^(a)	(420		)	(1,980		)	(1,160		)
Nontaxable gains	—			(5,460		)	—
Restructuring (benefits)/charges	—			2,230			(2,400		)
Noncontrolling interest	(280		)	(1,410		)	(790		)
Net change in valuation allowance	3,310			1,980			1,600
Other, net	(1,480		)	(1,280		)	(560		)
Income tax expense	$	32,870		$	18,140		$	6,060

__________________________

^(a)Tax holiday related to Thailand which expires on December 31, 2015.

The Company has recorded deferred tax assets on $33.6 million of various state operating loss carryforwards and $48.6 million of various foreign operating loss carryforwards. The majority of the state tax loss carryforwards expire between 2024 and 2027 and the majority of the foreign losses have indefinite carryforward periods.

In general, it is the practice and intention of the Company to reinvest the earnings of its non-U.S. subsidiaries in those operations. As of December 31, 2014, the Company has not made a provision for U.S. or additional non-U.S. withholding taxes on approximately $219.4 million of undistributed earnings of non-U.S. subsidiaries that are considered to be permanently reinvested. Generally, such amounts become subject to U.S. taxation upon remittance of dividends and under certain other circumstances. It is not practicable to estimate the amount of deferred tax liability related to investments in these non-U.S. subsidiaries.

Unrecognized tax benefits

The Company has approximately $27.2 million and $31.6 million of unrecognized tax benefits ("UTBs") as of December 31, 2014 and 2013, respectively. If the unrecognized tax benefits were recognized, the impact to the Company's effective tax rate would be to reduce reported income tax expense for the years ended December 31, 2014 and 2013 approximately $21.2 million and $25.7 million, respectively.

A reconciliation of the change in the UTBs and related accrued interest and penalties for the years ended December 31, 2014 and 2013 is as follows:



	Unrecognized Tax Benefits
	(dollars in thousands)
Balance at December 31, 2012	$	21,730
Tax positions related to current year:
Additions	1,300
Tax positions related to prior years:
Additions	15,340
Reductions	(4,310		)
Settlements	—
Lapses in the statutes of limitations	(2,490		)
Balance at December 31, 2013	$	31,570
Tax positions related to current year:
Additions	280
Tax positions related to prior years:
Additions	270
Reductions	(2,050		)
Settlements	—
Lapses in the statutes of limitations	(2,870		)
Balance at December 31, 2014	$	27,200

In addition to the UTBs summarized above, the Company has recorded approximately $2.2 million and $1.8 million in potential interest and penalties associated with uncertain tax positions as of December 31, 2014 and 2013, respectively.

The decrease in UTBs related to prior years is primarily related to the change in currency exchange rates.

The Company is subject to U.S. federal, state and local, and certain non-U.S. income tax examinations for tax years 2002 through 2013. The Company is currently under audit by the Internal Revenue Service for tax year 2011. Additionally, there are currently two foreign income tax examinations in process. The Company does not believe that the results of these examinations will have a significant impact on the Company's tax position or its effective tax rate.

Management monitors changes in tax statutes and regulations and the issuance of judicial decisions to determine the potential impact to unrecognized tax benefits and is not aware of, nor does it anticipate, any material subsequent events that could have a significant impact on the Company's financial position during the next twelve months.

- Definition

The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information.

+ References+ Details

Summary Quarterly Financial Data

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Summary Quarterly Financial Data



	As of December 31, 2014
	First Quarter		Second Quarter			Third Quarter		Fourth Quarter
	(unaudited, dollars in thousands, except for per share data)
Net sales	$	365,390	$	403,000		$	380,120	$	350,570
Gross profit	95,940		109,420			98,050		81,530
Income from continuing operations	19,230		26,430			18,390		2,680
Income (loss) from discontinued operations, net of income taxes	150		(230		)	3,840		(1,210		)
Net income	19,380		26,200			22,230		1,470
Less: Net income attributable to noncontrolling interests	810		—			—		—
Net income attributable to TriMas Corporation	18,570		26,200			22,230		1,470
Earnings (loss) per share attributable to TriMas Corporation—basic:
Continuing operations	$	0.41	$	0.59		$	0.41	$	0.06
Discontinued operations	—		(0.01		)	0.08		(0.03		)
Net income per share	$	0.41	$	0.58		$	0.49	$	0.03
Weighted average shares—basic	44,768,594		44,901,090			44,919,340		44,938,675
Earnings (loss) per share attributable to TriMas Corporation—diluted:
Continuing operations	$	0.41	$	0.59		$	0.41	$	0.06
Discontinued operations	—		(0.01		)	0.08		(0.03		)
Net income per share	$	0.41	$	0.58		$	0.49	$	0.03
Weighted average shares—diluted	45,186,114		45,230,862			45,276,199		45,384,460



	As of December 31, 2013
	First Quarter		Second Quarter		Third Quarter			Fourth Quarter
	(unaudited, dollars in thousands, except for per share data)
Net sales	$	335,750	$	377,750	$	354,910		$	320,190
Gross profit	82,930		103,250		94,110			70,770
Income from continuing operations	13,970		27,290		30,250			7,440
Income (loss) from discontinued operations, net of income taxes	70		510		(300		)	840
Net Income	14,040		27,800		29,950			8,280
Less: Net income (loss) attributable to noncontrolling interests	860		910		1,320			1,430
Net income attributable to TriMas Corporation	13,180		26,890		28,630			6,850
Earnings (loss) per share attributable to TriMas Corporation—basic:
Continuing Operations	$	0.34	$	0.67	$	0.72		$	0.13
Discontinued Operations	$	—	$	0.01	$	(0.01	)	$	0.02
Net income per share	$	0.34	$	0.68	$	0.71		$	0.15
Weighted average shares—basic	39,234,780		39,425,471		40,345,828			44,698,948
Earnings (loss) per share attributable to TriMas Corporation—diluted:
Continuing Operations	$	0.33	$	0.66	$	0.71		$	0.13
Discontinued Operations	$	—	$	0.01	$	(0.01	)	$	0.02
Net income per share	$	0.33	$	0.67	$	0.70		$	0.15
Weighted average shares—diluted	39,790,524		39,886,593		40,746,503			45,159,205

- Definition

The entire disclosure for the quarterly financial data in the annual financial statements. The disclosure may include a tabular presentation of financial information for each fiscal quarter for the current and previous year, including revenues, gross profit, income or loss before extraordinary items and earnings per share data. It also includes an indication if the information in the note is unaudited, comments on the aggregate effect of year-end adjustments, and an explanation of matters or transactions that affect comparability or are pertinent to an understanding of the information furnished.

+ References+ Details

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Policies)

12 Months Ended

Dec. 31, 2014

Accounting Policies [Abstract]

Business Combinations Policy [Policy Text Block]

Principles of Consolidation

Use of Estimates

Cash and Cash Equivalents

Receivables

Sales of Receivables

Inventories

Property and Equipment

Depreciation and Amortization and Impairment of Long-Lived Assets and Definted-Lived Intangible Assets

Goodwill and Indefinite-Lived Intangibles

Self-insurance

Pension Plans and Postretirement Benefits Other Than Pensions

Revenue Recognition

Cost of Sales

Selling, General and Administrative Expenses

Research and Development Costs

Shipping and Handling Expenses

Advertising and Sales Promotion Costs

Income Taxes

Foreign Currency Transactions and Translations Policy [Policy Text Block]

Derivative Financial Instruments

Fair Value of Financial Instruments

Fair Value of Financial Instruments. In accounting for and disclosing the fair value of these instruments, the Company uses the following hierarchy:


•	Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date;


•	Level 2 inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly; and


•	Level 3 inputs are unobservable inputs for the asset or liability.

Earnings Per Share

Stock-based Compensation

Other Comprehensive Income

Acquisitions (Tables)

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Business Combinations [Abstract]

Redeemable Noncontrolling Interest



	Redeemable Noncontrolling interest
	(dollars in thousands)
Beginning balance, February 24, 2012	$	25,630
Distributions to noncontrolling interests	(1,260		)
Net income attributable to noncontrolling interests	2,410
Ending balance, December 31, 2012	$	26,780
Distributions to noncontrolling interests	(2,710		)
Net income attributable to noncontrolling interests	4,520
Redemption value adjustments for noncontrolling interests	890
Ending balance, December 31, 2013	$	29,480
Distributions to noncontrolling interests	(580		)
Net income attributable to noncontrolling interests	810
Ending balance, March 11, 2014	$	29,710

Schedule of Purchase Price Allocation

The following table summarizes the fair value of consideration paid for Allfast, and the assets acquired and liabilities assumed:



	October 17, 2014
	(dollars in thousands)
Consideration
Cash paid, net of cash acquired	$	351,220
Deferred purchase price^(a)	15,730
Total consideration	$	366,950
Recognized amounts of identifiable assets acquired and liabilities assumed
Receivables	$	8,950
Inventories	19,850
Intangible assets other than goodwill^(b)	165,000
Prepaid expenses and other assets	340
Property and equipment, net	26,490
Accounts payable and accrued liabilities	(2,620		)
Total identifiable net assets	218,010
Goodwill^(c)	148,940
	$	366,950

___________________________

^(c)All of the goodwill was assigned to the Company's Aerospace reportable segment and is expected to be deductible for tax purposes.



	Year ended December 31, 2013
	(dollars in thousands)
Consideration
Initial cash paid net of cash acquired	$	105,790
Deferred/contingent consideration^(a)	12,370
Total consideration	$	118,160
Recognized amounts of identifiable assets acquired and liabilities assumed
Receivables	$	12,420
Inventories	27,350
Intangible assets other than goodwill^(b)	41,140
Prepaid expenses and other assets	17,480
Property and equipment, net	20,930
Accounts payable and accrued liabilities	(12,510		)
Deferred income taxes	(8,900		)
Other long-term liabilities	(18,580		)
Total identifiable net assets	79,330
Goodwill^(c)	38,830
	$	118,160

__________________________



	February 24, 2012
	(dollars in thousands)
Consideration
Initial cash paid net of working capital adjustment	$	59,200
Contingent consideration ^(a)	8,490
Total consideration	$	67,690
Recognized amounts of identifiable assets acquired and liabilities assumed
Receivables	$	8,760
Inventories	4,200
Intangible assets other than goodwill ^(b)	48,400
Other assets	2,450
Accounts payable and accrued liabilities	(4,270		)
Long-term liabilities	(1,610		)
Total identifiable net assets	57,930
Redeemable noncontrolling interest	(25,630		)
Goodwill ^(c)	35,390
	$	67,690

__________________________

^(c)All of the goodwill was assigned to the Company's Packaging reportable segment and is expected to be deductible for tax purposes

Business Combination, Results Of Operations Of Acquiree Since Acquisition

Business Acquisition, Pro Forma Information



	Pro forma Combined ^(a)
	Year ended December 31,
	2014		2013
	(dollars in thousands)
Net sales	$	1,548,220	$	1,442,490
Net income attributable to TriMas Corporation	$	69,430	$	76,260

___________________________

^(a)The supplemental pro forma results reflect certain material adjustments, as follows:


1.	Pre-tax pro forma adjustments for amortization expense of $6.0 million and $6.8 million for the years ended December 31, 2014 and December 31, 2013 on the intangible assets associated with the acquisition.


2.	Pre-tax pro forma adjustments of $4.9 million and $7.1 million for the years ended December 31, 2014 and December 31, 2013, respectively, to reflect interest expense incurred on the incremental term loan A and revolver borrowings incurred in order to fund the acquisition.



	Pro forma Combined ^(a)
	Year ended December 31,
	2012		2011
	(dollars in thousands)
Net sales	$	1,280,940	$	1,144,020
Net income attributable to TriMas Corporation	$	35,850	$	54,540

___________________________

Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2014

Discontinued Operations and Disposal Groups [Abstract]

Schedule of Disposal Groups, Including Discontinued Operations, Income Statement, Balance Sheet and Additional Disclosures

Results of discontinued operations are summarized as follows:



	Year ended December 31,
	2014			2013			2012
	(dollars in thousands)
Net sales	$	3,480		$	6,260		$	5,400
Income (loss) from discontinued operations, before income taxes	$	4,040		$	1,670		$	(230	)
Income tax benefit (expense)	(1,490		)	(550		)	90
Income (loss) from discontinued operations, net of income taxes	$	2,550		$	1,120		$	(140	)

- Definition

Tabular disclosure of disposal groups, which may include the gain (loss) recognized in the income statement and the income statement caption that includes that gain (loss), amounts of revenues and pretax profit or loss reported in discontinued operations, the classification and carrying value of the assets and liabilities comprising the disposal group, and the segment in which the disposal group was reported. Also may include the amount of adjustments to amounts previously reported in discontinued operations such as resolution of contingencies arising from the disposal transaction or the operations of the component prior to disposal.

+ References+ Details

Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying amount of goodwill for the years ended December 31, 2014 and 2013 are as follows:



									Engineered		Cequent		Cequent
	Packaging			Energy			Aerospace		Components		APEA		Americas			Total
	(dollars in thousands)
Balance, December 31, 2012	$	158,980		$	64,210		$	41,130	$	3,180	$	—	$	3,440		$	270,940
Goodwill from acquisitions	—			14,440			19,950		4,240		—		4,410			43,040
Goodwill associated with sold businesses	(2,060		)	—			—		—		—		—			(2,060		)
Foreign currency translation and other	1,140			(2,730		)	—		—		—		(670		)	(2,260		)
Balance, December 31, 2013	$	158,060		$	75,920		$	61,080	$	7,420	$	—	$	7,180		$	309,660
Goodwill from acquisitions	15,810			—			149,050		—		—		—			164,860
Foreign currency translation and other	(4,520		)	(2,740		)	—		—		—		(600		)	(7,860		)
Balance, December 31, 2014	$	169,350		$	73,180		$	210,130	$	7,420	$	—	$	6,580		$	466,660

Schedule of Intangible Assets (excluding Goodwill) by Major Class



	As of December 31, 2014					As of December 31, 2013
Intangible Category by Useful Life	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
	(dollars in thousands)
Finite-lived intangible assets:
Customer relationships, 5 - 12 years	$	109,460	$	(44,370	)	$	105,090	$	(36,260	)
Customer relationships, 15 - 25 years	237,610		(103,390		)	154,610		(94,200		)
Total customer relationships	347,070		(147,760		)	259,700		(130,460		)
Technology and other, 1 - 15 years	71,830		(32,250		)	38,980		(28,940		)
Technology and other, 17 - 30 years	44,120		(27,560		)	43,990		(25,310		)
Total technology and other	115,950		(59,810		)	82,970		(54,250		)
Indefinite-lived intangible assets:
Trademark/Trade names	108,480		—			61,570		—
Total other intangible assets	$	571,500	$	(207,570	)	$	404,240	$	(184,710	)

Schedule of Finite-Lived Intangible Assets, Amortization Expense

Amortization expense related to intangible assets as included in the accompanying consolidated statement of income is summarized as follows:



	Year ended December 31,
	2014		2013		2012
	(dollars in thousands)
Technology and other, included in cost of sales	$	5,310	$	4,870	$	4,940
Customer relationships, included in selling, general and administrative expenses	18,400		14,900		14,880
Total amortization expense	$	23,710	$	19,770	$	19,820

Schedule of Expected Amortization Expense [Table Text Block]

Estimated amortization expense for the next five fiscal years beginning after December 31, 2014 is as follows:



Year ended December 31,	Estimated Amortization Expense
	(dollars in thousands)
2015		$28,760
2016		$27,970
2017		$27,600
2018		$24,020
2019		$23,100

Property and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property and Equipment

Property and equipment consists of the following components:



	December 31, 2014		December 31, 2013
	(dollars in thousands)
Land and land improvements	$	15,000	$	5,520
Buildings	69,820		61,960
Machinery and equipment	383,440		351,960
	468,260		419,440
Less: Accumulated depreciation	235,610		213,290
Property and equipment, net	$	232,650	$	206,150

Depreciation Expense

Depreciation expense as included in the accompanying consolidated statement of income is as follows:



	Year ended December 31,
	2014		2013		2012
	(dollars in thousands)
Depreciation expense, included in cost of sales	$	28,030	$	26,410	$	21,520
Depreciation expense, included in selling, general and administrative expense	4,730		4,380		3,500
Total depreciation expense	$	32,760	$	30,790	$	25,020

Long-term Debt (Tables)

12 Months Ended

Dec. 31, 2014

Debt Disclosure [Abstract]

Schedule of Debt

The Company's long-term debt consists of the following:



	December 31, 2014		December 31, 2013
	(dollars in thousands)
Credit Agreement	$	559,530	$	246,130
Receivables facility and other	79,800		59,610
	639,330		305,740
Less: Current maturities, long-term debt	23,860		10,290
Long-term debt	$	615,470	$	295,450

Schedule of Maturities of Long-term Debt

Future maturities of the face value of long-term debt at December 31, 2014 are as follows:



Year Ending December 31:	(dollars in thousands)
2015	$	23,860
2016	23,530
2017	35,000
2018	556,940
Total	$	639,330

Derivative Instruments (Tables)

12 Months Ended

Dec. 31, 2014

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

As of December 31, 2014 and 2013, the fair value carrying amount of the Company's derivatives designated as hedging instruments are recorded as follows:



		Asset / (Liability) Derivatives
	Balance Sheet Caption	December 31, 2014			December 31, 2013
		(dollars in thousands)
Derivatives designated as hedging instruments
Interest rate swap	Other assets	$	1,270		$	2,080
Interest rate swap	Accrued liabilities	(180		)	(360		)
Foreign currency forward contracts	Accrued liabilities	(150		)	—
Total derivatives designated as hedging instruments		$	940		$	1,720

Schedule of Derivative Instruments, Gain (Loss) in Statement of Financial Performance



	Amount of Income (Loss) Recognized in AOCI on Derivative (Effective Portion, net of tax)					Location of Income (Loss) Reclassified from AOCI into Earnings (Effective Portion)	Amount of Income (Loss) Reclassified from AOCI into Earnings
	As of December 31,						Year ended December 31,
	2014			2013			2014			2013		2012
	(dollars in thousands)						(dollars in thousands)
Derivatives designated as hedging instruments
Interest rate swap	$	680		$	1,060	Interest expense	$	(970	)	$	2,510	$	(250	)
Foreign currency forward contracts	$	(70	)	$	—	Cost of sales	$	170		$	—	$	—

Schedule of Other Derivatives Not Designated as Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]



		Amount of Loss Recognized in Earnings on Derivatives
		Year ended December 31,
	Location of Loss Recognized in Earnings on Derivatives	2014		2013			2012
		(dollars in thousands)
Derivatives not designated as hedging instruments
Interest rate swaps	Interest expense	$	—	$	(1,480	)	$	(80	)

Fair Value Measurements, Recurring and Nonrecurring

Fair value measurements and the fair value hierarchy level for the Company's assets and liabilities measured at fair value on a recurring basis as of December 31, 2014 and 2013 are shown below.



	Frequency	Asset / (Liability)			Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)
		(dollars in thousands)
December 31, 2014
Interest rate swap	Recurring	$	1,090		$	—	$	1,090		$	—
Foreign currency forward contracts	Recurring	$	(150	)	$	—	$	(150	)	$	—
December 31, 2013
Interest rate swap	Recurring	$	1,720		$	—	$	1,720		$	—

- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

+ References+ Details

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2014

Commitments and Contingencies Disclosure [Abstract]

Schedule of Damages Sought for Specific Claims

Below is a breakdown of the amount sought for those claims seeking specific amounts:

Compensatory & Punitive

Compensatory Only

Punitive Only

Range of damages sought (in millions)

$0.0 to $5.0

$5.0 to $10.0

$10.0+

$0.0 to $0.6

$0.6 to $5.0

$5.0+

$0.0 to $2.5

$2.5 to $5.0

$5.0+

Number of claims

111

Schedule of Loss Contingencies by Contingency

The following chart summarizes the number of claimants, number of claims filed, number of claims dismissed, number of claims settled, the average settlement amount per claim and the total defense costs, excluding amounts reimbursed under the Company's primary insurance, at the applicable date and for the applicable periods:



	Claims pending at beginning of period	Claims filed during period	Claims dismissed during period	Claims settled during period	Average settlement amount per claim during period		Total defense costs during period
Fiscal year ended December 31, 2012	8,048	367	519	16	$	14,513	$	2,650,000
Fiscal year ended December 31, 2013	7,880	360	226	39	$	8,294	$	2,620,000
Fiscal year ended December 31, 2014	7,975	210	155	38	$	18,734	$	2,800,000

- Definition

Tabular disclosure of the loss contingencies that were reported in the period or disclosed as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 450

-SubTopic 20

-Section 50

-Paragraph 1

-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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-Name Accounting Standards Codification

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-Name Accounting Standards Codification

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-URI http://asc.fasb.org/extlink&oid=6851643&loc=d3e12021-110248

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-Topic 450

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-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14615-108349

+ Details

Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Compensation and Retirement Disclosure [Abstract]

Schedule of Costs of Retirement Plans



	Pension Benefit									Postretirement Benefit
	2014			2013			2012			2014			2013			2012
	(dollars in thousands)
Service cost	$	760		$	680		$	600		$	—		$	—		$	—
Interest cost	1,760			1,610			1,620			30			40			50
Expected return on plan assets	(2,070		)	(1,810		)	(1,720		)	—			—			—
Amortization of prior-service cost	—			—			—			—			—			(200		)
Settlement/curtailment	—			—			190			—			—			(1,490		)
Amortization of net (gain)/loss	1,120			1,280			1,070			(90		)	(80		)	(80		)
Net periodic benefit expense (income)	$	1,570		$	1,760		$	1,760		$	(60	)	$	(40	)	$	(1,720	)

Schedule of Assumptions Used

Weighted-average assumptions used in accounting for the U.S. defined benefit pension plans and postretirement benefit plans are as follows:



	Pension Benefit						Postretirement Benefit
	2014		2013		2012		2014		2013		2012
Discount rate for obligations	4.17	%	5.01	%	4.24	%	3.89	%	4.48	%	3.69	%
Discount rate for benefit costs	5.01	%	4.24	%	4.78	%	4.48	%	3.69	%	4.54	%
Rate of increase in compensation levels	N/A		N/A		N/A		N/A		N/A		N/A
Expected long-term rate of return on plan assets	7.50	%	7.50	%	7.75	%	N/A		N/A		N/A



	Pension Benefit
	2014		2013		2012
Discount rate for obligations	3.70	%	4.50	%	4.50	%
Discount rate for benefit costs	4.50	%	4.50	%	4.80	%
Rate of increase in compensation levels	3.80	%	4.10	%	3.70	%
Expected long-term rate of return on plan assets	5.60	%	5.40	%	5.50	%

Schedule of Changes in Projected Benefit Obligations and Fair Value of Plan Assets



	Pension Benefit						Postretirement Benefit
	2014			2013			2014			2013
	(dollars in thousands)
Changes in Projected Benefit Obligations
Benefit obligations at January 1	$	(38,230	)	$	(38,730	)	$	(810	)	$	(970	)
Service cost	(760		)	(680		)	—			—
Interest cost	(1,760		)	(1,610		)	(30		)	(40		)
Participant contributions	(60		)	(60		)	—			—
Actuarial gain (loss)	(6,470		)	1,280			100			170
Benefit payments	2,230			1,850			80			30
Change in foreign currency	1,320			(280		)	—			—
Projected benefit obligations at December 31	(43,730		)	(38,230		)	(660		)	(810		)
Changes in Plan Assets
Fair value of plan assets at January 1	$	31,780		$	27,860		$	—		$	—
Actual return on plan assets	1,830			2,270			—			—
Employer contributions	2,340			3,240			80			30
Participant contributions	60			60			—			—
Benefit payments	(2,230		)	(1,850		)	(80		)	(30		)
Change in foreign currency	(1,170		)	200			—			—
Fair value of plan assets at December 31	32,610			31,780			—			—
Funded status at December 31	$	(11,120	)	$	(6,450	)	$	(660	)	$	(810	)

Schedule of Amounts Recognized in Balance Sheet



	Pension Benefit						Postretirement Benefit
	2014			2013			2014			2013
	(dollars in thousands)
Amounts Recognized in Balance Sheet
Prepaid benefit cost	$	790		$	980		$	—		$	—
Current liabilities	(320		)	(410		)	(70		)	(90		)
Noncurrent liabilities	(11,590		)	(7,020		)	(590		)	(720		)
Net liability recognized at December 31	$	(11,120	)	$	(6,450	)	$	(660	)	$	(810	)

Schedule of Accumulated Other Comprehensive Income



	Pension Benefit				Postretirement Benefit
	2014		2013		2014			2013
	(dollars in thousands)
Amounts Recognized in Accumulated Other Comprehensive (Income) Loss
Unrecognized prior-service cost	$	90	$	110	$	—		$	—
Unrecognized net loss/(gain)	21,420		16,420		(670		)	(670		)
Total accumulated other comprehensive (income) loss recognized at December 31	$	21,510	$	16,530	$	(670	)	$	(670	)

Changes in AOCI by component for the year ended December 31, 2014 are summarized as follows, net of tax:



	Defined Benefit Plans			Derivative Instruments			Foreign Currency Translation			Total
	(dollars in thousands)
Balance, December 31, 2013	$	(10,840	)	$	1,060		$	37,610		$	27,830
Net unrealized losses arising during the period	(4,040		)	(900		)	(15,090		)	(20,030		)
Less: Net realized losses reclassified to net income ^(a)	(700		)	(450		)	(1,270		)	(2,420		)
Net current-period change	(3,340		)	(450		)	(13,820		)	(17,610		)
Balance, December 31, 2014	$	(14,180	)	$	610		$	23,790		$	10,220

__________________________

Changes in AOCI by component for the year ended December 31, 2013 are summarized as follows, net of tax:



	Defined Benefit Plans			Derivative Instruments			Foreign Currency Translation			Total
	(dollars in thousands)
Balance, December 31, 2012	$	(12,440	)	$	(1,680	)	$	53,380		$	39,260
Net unrealized gains (losses) arising during the period	800			3,370			(7,860		)	(3,690		)
Less: Net realized gains (losses) reclassified to net income ^(a)	(800		)	630			7,910			7,740
Net current-period change	1,600			2,740			(15,770		)	(11,430		)
Balance, December 31, 2013	$	(10,840	)	$	1,060		$	37,610		$	27,830

__________________________

Schedule of Benefit Obligations in Excess of Fair Value of Plan Assets



	Pension Benefit						Postretirement Benefit
	2014			2013			2014			2013
	(dollars in thousands)
Benefit Obligation in Excess of Plan Assets
Accumulated benefit obligations at December 31	$	(40,630	)	$	(20,200	)	$	(660	)	$	(810	)
Plans with Benefit Obligation Exceeding Plan Assets
Benefit obligation	$	(42,910	)	$	(37,430	)	$	(660	)	$	(810	)
Plan assets	31,000			30,000			—			—
Benefit obligation in excess of plan assets	$	(11,910	)	$	(7,430	)	$	(660	)	$	(810	)

Schedule of Effect of Change in Discount Rate and Expected Return on Assets on Benefit Obligations and Expense



	December 31, 2014 Benefit Obligation						2014 Expense
	Pension			Postretirement Benefit			Pension			Postretirement Benefit
	(dollars in thousands)
Discount rate
25 basis point increase	$	(1,580	)	$	(20	)	$	(140	)	$	—
25 basis point decrease	$	1,650		$	20		$	150		—
Expected return on assets
50 basis point increase	N/A			N/A			$	(170	)	N/A
50 basis point decrease	N/A			N/A			$	170		N/A

Schedule of Allocation of Plan Assets

The actual weighted average asset allocation of the Company's domestic and foreign pension plans' assets at December 31, 2014 and 2013 and target allocations by class, were as follows:



	Domestic Pension						Foreign Pension
			Actual						Actual
	Target		2014		2013		Target		2014		2013
Equity securities	50%-70%		63	%	61	%	55	%	52	%	57	%
Fixed income securities	30%-50%		35	%	36	%	45	%	48	%	42	%
Cash and cash equivalents	—		2	%	3	%	—		—	%	1	%
Total	100	%	100	%	100	%	100	%	100	%	100	%

Fair Value, Assets Measured on Recurring Basis [Table Text Block]



	Total		Level 1		Level 2		Level 3
Equity Securities
Investment funds	$	18,220	$	—	$	18,220	$	—
Fixed Income Securities
Investment funds	8,610		—		8,610		—
Government bonds	2,080		—		2,080		—
Government agencies	30		—		30		—
Corporate bonds	1,890		—		1,890		—
Other^(a)	1,270		—		1,270		—
Cash and cash equivalents
Short term investment funds	510		130		380		—
Total	$	32,610	$	130	$	32,480	$	—

________________________________________

^(a) Comprised of mortgage-backed, asset backed securities

Schedule of Expected Benefit Payments

The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid:



	Pension Benefit		Postretirement Benefit
	(dollars in thousands)
December 31, 2015	$	1,720	$	70
December 31, 2016	1,770		70
December 31, 2017	1,820		60
December 31, 2018	1,940		50
December 31, 2019	2,010		50
Years 2019-2024	10,890		200

Schedule of Effect of One-Percentage-Point Change in Assumed Health Care Cost Trend Rates

A one-percentage point change in the assumed health care cost trend would have the following effects:



	One Percentage-Point Increase		One Percentage-Point Decrease
	(dollars in thousands)
Effect on total service and interest cost	$	—	$	—
Effect on postretirement benefit obligation	50		(40		)

Equity Awards (Tables)

12 Months Ended

Dec. 31, 2014

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Share-based Compensation, Stock Options, Activity

Information related to stock options at December 31, 2014 is as follows:



	Number of Stock Options		Weighted Average Option Price		Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding at January 1, 2014	342,448		$	9.92
Exercised	(90,781	)	19.72
Cancelled	—		—
Expired	—		—
Outstanding at December 31, 2014	251,667		$	6.39	3.5	$	6,266,389

Schedule of Share-based Compensation, Restricted Stock Units Award Activity

Information related to restricted shares at December 31, 2014 is as follows:



	Number of Unvested Restricted Shares		Weighted Average Grant Date Fair Value		Average Remaining Contractual Life (Years)	Aggregate Intrinsic Value
Outstanding at January 1, 2014	654,400		$	26.00
Granted	356,413		33.17
Vested	(262,714	)	25.53
Cancelled	(22,640	)	29.51
Outstanding at December 31, 2014	725,459		$	29.59	0.9	$	22,699,612

Other Comprehensive Income (Tables)

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Other Comprehensive Income [Abstract]

Schedule of Accumulated Other Comprehensive Income



	Pension Benefit				Postretirement Benefit
	2014		2013		2014			2013
	(dollars in thousands)
Amounts Recognized in Accumulated Other Comprehensive (Income) Loss
Unrecognized prior-service cost	$	90	$	110	$	—		$	—
Unrecognized net loss/(gain)	21,420		16,420		(670		)	(670		)
Total accumulated other comprehensive (income) loss recognized at December 31	$	21,510	$	16,530	$	(670	)	$	(670	)

Changes in AOCI by component for the year ended December 31, 2014 are summarized as follows, net of tax:



	Defined Benefit Plans			Derivative Instruments			Foreign Currency Translation			Total
	(dollars in thousands)
Balance, December 31, 2013	$	(10,840	)	$	1,060		$	37,610		$	27,830
Net unrealized losses arising during the period	(4,040		)	(900		)	(15,090		)	(20,030		)
Less: Net realized losses reclassified to net income ^(a)	(700		)	(450		)	(1,270		)	(2,420		)
Net current-period change	(3,340		)	(450		)	(13,820		)	(17,610		)
Balance, December 31, 2014	$	(14,180	)	$	610		$	23,790		$	10,220

__________________________

Changes in AOCI by component for the year ended December 31, 2013 are summarized as follows, net of tax:



	Defined Benefit Plans			Derivative Instruments			Foreign Currency Translation			Total
	(dollars in thousands)
Balance, December 31, 2012	$	(12,440	)	$	(1,680	)	$	53,380		$	39,260
Net unrealized gains (losses) arising during the period	800			3,370			(7,860		)	(3,690		)
Less: Net realized gains (losses) reclassified to net income ^(a)	(800		)	630			7,910			7,740
Net current-period change	1,600			2,740			(15,770		)	(11,430		)
Balance, December 31, 2013	$	(10,840	)	$	1,060		$	37,610		$	27,830

__________________________

Segment Information (Tables)

12 Months Ended

Dec. 31, 2014

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Segment activity is as follows:



	Year ended December 31,
	2014			2013			2012
	(dollars in thousands)
Net Sales
Packaging	$	337,710		$	313,220		$	275,160
Energy	206,720			205,580			190,210
Aerospace	121,510			95,530			73,180
Engineered Components	221,360			185,370			200,000
Cequent APEA	165,110			151,620			128,560
Cequent Americas	446,670			437,280			400,400
Total	$	1,499,080		$	1,388,600		$	1,267,510
Operating Profit (Loss)
Packaging	$	77,850		$	83,770		$	57,550
Energy	(6,660		)	8,620			17,810
Aerospace	17,830			22,830			21,020
Engineered Components	34,080			19,450			27,990
Cequent APEA	7,860			13,920			12,300
Cequent Americas	31,090			8,850			27,420
Corporate	(37,500		)	(37,840		)	(36,020		)
Total	$	124,550		$	119,600		$	128,070
Capital Expenditures
Packaging	$	13,730		$	11,010		$	15,470
Energy	2,690			5,250			5,210
Aerospace	4,430			4,810			3,210
Engineered Components	1,690			2,190			4,090
Cequent APEA	6,910			9,650			8,290
Cequent Americas	4,530			5,610			9,670
Corporate	470			970			180
Total	$	34,450		$	39,490		$	46,120
Depreciation and Amortization
Packaging	$	20,410		$	18,960		$	17,970
Energy	4,600			3,820			3,600
Aerospace	7,630			3,790			2,630
Engineered Components	4,460			4,270			3,860
Cequent APEA	7,520			5,770			3,840
Cequent Americas	11,410			13,680			12,780
Corporate	440			260			160
Total	$	56,470		$	50,550		$	44,840



	Year ended December 31,
	2014			2013		2012
	(dollars in thousands)
Operating Net Assets
Packaging	$	398,530		$	377,480	$	376,040
Energy	170,430			180,410		158,710
Aerospace	498,560			150,750		80,620
Engineered Components	65,910			73,780		68,870
Cequent APEA	75,290			81,120		51,790
Cequent Americas	151,760			164,590		145,360
Corporate	(8,650		)	11,140		2,370
Total operating net assets	1,351,830			1,039,270		883,760
Current liabilities	309,920			261,510		247,200
Consolidated assets	$	1,661,750		$	1,300,780	$	1,130,960

Reconciliation of Assets from Segment to Consolidated



	Year ended December 31,
	2014			2013		2012
	(dollars in thousands)
Operating Net Assets
Packaging	$	398,530		$	377,480	$	376,040
Energy	170,430			180,410		158,710
Aerospace	498,560			150,750		80,620
Engineered Components	65,910			73,780		68,870
Cequent APEA	75,290			81,120		51,790
Cequent Americas	151,760			164,590		145,360
Corporate	(8,650		)	11,140		2,370
Total operating net assets	1,351,830			1,039,270		883,760
Current liabilities	309,920			261,510		247,200
Consolidated assets	$	1,661,750		$	1,300,780	$	1,130,960

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas



	As of December 31,
	2014				2013				2012
	Net Sales		Operating Net Assets		Net Sales		Operating Net Assets		Net Sales		Operating Net Assets
	(dollars in thousands)
Non-U.S.
Europe	$	120,690	$	97,670	$	97,500	$	136,490	$	62,400	$	102,250
Australia	88,820		38,700		97,580		27,080		100,620		32,400
Asia	46,810		92,470		44,870		59,120		32,230		38,130
Africa	8,800		4,290		3,310		4,770		4,180		3,090
Other Americas	45,950		53,780		46,210		83,080		34,090		68,660
Total non-U.S	311,070		286,910		289,470		310,540		233,520		244,530

Total U.S.	1,188,010		1,064,920		1,099,130		728,730		1,033,990		639,230
Total	$	1,499,080	$	1,351,830	$	1,388,600	$	1,039,270	$	1,267,510	$	883,760

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

+ References+ Details

Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of Components of Income Tax Expense (Benefit)

The Company's income before income taxes and income tax expense for continuing operations, each by tax jurisdiction, consisted of the following:



	Year ended December 31,
	2014			2013			2012
	(dollars in thousands)
Income before income taxes:
Domestic	$	85,000		$	49,480		$	12,150
Foreign	14,600			47,610			30,340
Total income before income taxes	$	99,600		$	97,090		$	42,490
Current income tax expense:
Federal	$	31,150		$	15,850		$	8,340
State and local	3,450			1,440			1,860
Foreign	6,890			9,650			4,190
Total current income tax expense	41,490			26,940			14,390
Deferred income tax expense (benefit):
Federal	(9,170		)	(4,490		)	(6,200		)
State and local	350			(1,020		)	(750		)
Foreign	200			(3,290		)	(1,380		)
Total deferred income tax expense	(8,620		)	(8,800		)	(8,330		)
Income tax expense	$	32,870		$	18,140		$	6,060

Schedule of Deferred Tax Assets and Liabilities

The components of deferred taxes at December 31, 2014 and 2013 are as follows:



	2014			2013
	(dollars in thousands)
Deferred tax assets:
Accounts receivable	$	1,710		$	1,240
Inventories	9,680			7,840
Accrued liabilities and other long-term liabilities	45,750			40,410
Tax loss and credit carryforwards	17,530			10,010
Gross deferred tax asset	74,670			59,500
Valuation allowances	(9,820		)	(6,530		)
Net deferred tax asset	64,850			52,970
Deferred tax liabilities:
Property and equipment	(19,640		)	(20,420		)
Goodwill and other intangible assets	(64,400		)	(66,440		)
Other, principally deferred income	(5,230		)	(6,310		)
Gross deferred tax liability	(89,270		)	(93,170		)
Net deferred tax liability	$	(24,420	)	$	(40,200	)

Schedule of Effective Income Tax Rate Reconciliation

The following is a reconciliation of income tax expense computed at the U.S. federal statutory rate to income tax expense allocated to income from continuing operations before income taxes:



	2014			2013			2012
	(dollars in thousands)
U.S. federal statutory rate	35		%	35		%	35		%
Tax at U.S. federal statutory rate	$	34,860		$	33,990		$	14,880
State and local taxes, net of federal tax benefit	2,750			250			730
Differences in statutory foreign tax rates	(3,910		)	(8,550		)	(4,920		)
Change in recognized tax benefits	(1,960		)	(1,630		)	(1,320		)
Tax holiday^(a)	(420		)	(1,980		)	(1,160		)
Nontaxable gains	—			(5,460		)	—
Restructuring (benefits)/charges	—			2,230			(2,400		)
Noncontrolling interest	(280		)	(1,410		)	(790		)
Net change in valuation allowance	3,310			1,980			1,600
Other, net	(1,480		)	(1,280		)	(560		)
Income tax expense	$	32,870		$	18,140		$	6,060

Schedule of Unrecognized Tax Benefits Roll Forward

A reconciliation of the change in the UTBs and related accrued interest and penalties for the years ended December 31, 2014 and 2013 is as follows:



	Unrecognized Tax Benefits
	(dollars in thousands)
Balance at December 31, 2012	$	21,730
Tax positions related to current year:
Additions	1,300
Tax positions related to prior years:
Additions	15,340
Reductions	(4,310		)
Settlements	—
Lapses in the statutes of limitations	(2,490		)
Balance at December 31, 2013	$	31,570
Tax positions related to current year:
Additions	280
Tax positions related to prior years:
Additions	270
Reductions	(2,050		)
Settlements	—
Lapses in the statutes of limitations	(2,870		)
Balance at December 31, 2014	$	27,200

Summary Quarterly Financial Data (Tables)

12 Months Ended

Dec. 31, 2014

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information



	As of December 31, 2014
	First Quarter		Second Quarter			Third Quarter		Fourth Quarter
	(unaudited, dollars in thousands, except for per share data)
Net sales	$	365,390	$	403,000		$	380,120	$	350,570
Gross profit	95,940		109,420			98,050		81,530
Income from continuing operations	19,230		26,430			18,390		2,680
Income (loss) from discontinued operations, net of income taxes	150		(230		)	3,840		(1,210		)
Net income	19,380		26,200			22,230		1,470
Less: Net income attributable to noncontrolling interests	810		—			—		—
Net income attributable to TriMas Corporation	18,570		26,200			22,230		1,470
Earnings (loss) per share attributable to TriMas Corporation—basic:
Continuing operations	$	0.41	$	0.59		$	0.41	$	0.06
Discontinued operations	—		(0.01		)	0.08		(0.03		)
Net income per share	$	0.41	$	0.58		$	0.49	$	0.03
Weighted average shares—basic	44,768,594		44,901,090			44,919,340		44,938,675
Earnings (loss) per share attributable to TriMas Corporation—diluted:
Continuing operations	$	0.41	$	0.59		$	0.41	$	0.06
Discontinued operations	—		(0.01		)	0.08		(0.03		)
Net income per share	$	0.41	$	0.58		$	0.49	$	0.03
Weighted average shares—diluted	45,186,114		45,230,862			45,276,199		45,384,460



	As of December 31, 2013
	First Quarter		Second Quarter		Third Quarter			Fourth Quarter
	(unaudited, dollars in thousands, except for per share data)
Net sales	$	335,750	$	377,750	$	354,910		$	320,190
Gross profit	82,930		103,250		94,110			70,770
Income from continuing operations	13,970		27,290		30,250			7,440
Income (loss) from discontinued operations, net of income taxes	70		510		(300		)	840
Net Income	14,040		27,800		29,950			8,280
Less: Net income (loss) attributable to noncontrolling interests	860		910		1,320			1,430
Net income attributable to TriMas Corporation	13,180		26,890		28,630			6,850
Earnings (loss) per share attributable to TriMas Corporation—basic:
Continuing Operations	$	0.34	$	0.67	$	0.72		$	0.13
Discontinued Operations	$	—	$	0.01	$	(0.01	)	$	0.02
Net income per share	$	0.34	$	0.68	$	0.71		$	0.15
Weighted average shares—basic	39,234,780		39,425,471		40,345,828			44,698,948
Earnings (loss) per share attributable to TriMas Corporation—diluted:
Continuing Operations	$	0.33	$	0.66	$	0.71		$	0.13
Discontinued Operations	$	—	$	0.01	$	(0.01	)	$	0.02
Net income per share	$	0.33	$	0.67	$	0.70		$	0.15
Weighted average shares—diluted	39,790,524		39,886,593		40,746,503			45,159,205

Summary of Significant Accounting Policies - Depreciation and Amortization (Details)	12 Months Ended
	Dec. 31, 2014
Minimum [Member]
Property, Plant and Equipment and Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	1 year
Minimum [Member] \| Customer Relationships [Member]
Property, Plant and Equipment and Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	5 years
Minimum [Member] \| Technology and Other [Member]
Property, Plant and Equipment and Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	1 year
Minimum [Member] \| Land and Land Improvements/Buildings [Member]
Property, Plant and Equipment and Finite-Lived Intangible Assets [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Minimum [Member] \| Machinery and Equipment [Member]
Property, Plant and Equipment and Finite-Lived Intangible Assets [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Maximum [Member]
Property, Plant and Equipment and Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	30 years
Maximum [Member] \| Customer Relationships [Member]
Property, Plant and Equipment and Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	25 years
Maximum [Member] \| Technology and Other [Member]
Property, Plant and Equipment and Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Useful Life	30 years
Maximum [Member] \| Land and Land Improvements/Buildings [Member]
Property, Plant and Equipment and Finite-Lived Intangible Assets [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Maximum [Member] \| Machinery and Equipment [Member]
Property, Plant and Equipment and Finite-Lived Intangible Assets [Line Items]
Property, Plant and Equipment, Useful Life	15 years

Summary of Significant Accounting Policies - Goodwill and Indefinite-Lived Intangibles (Details)	12 Months Ended
	Dec. 31, 2014 number
Annual Goodwill Impairment Assessment [Abstract]
Number of reporting units	12
Number of Reportable Segments	6
Number of reporting units that have goodwill	10

Summary of Significant Accounting Policies - Research and Development Costs (Details) (Cost of Sales [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Cost of Sales [Member]
Research and Development Assets Acquired Other than Through Business Combination [Line Items]
Research and Development Expense	$ 1.7	$ 2.0	$ 1.3

- Definition

The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

+ References+ Details

Summary of Significant Accounting Policies - Shipping and Handling Expenses (Details) (Selling, General and Administrative Expenses [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Selling, General and Administrative Expenses [Member]
Shipping and Handling Costs [Line Items]
Shipping and Handling Costs	$ 5.5	$ 4.6	$ 4.1

- Definition

Cost incurred during the reporting period in transporting goods and services to customers. Includes freight-out costs.

+ References+ Details

Summary of Significant Accounting Policies - Earnings Per Share (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	251,667	342,448
Restricted Shares [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Incremental Common Shares Attributable to Share-based Payment Arrangements	245,828	293,021	219,911
Stock Options [Member]
Earnings Per Share, Diluted, by Common Class, Including Two Class Method [Line Items]
Incremental Common Shares Attributable to Share-based Payment Arrangements	141,656	176,428	208,175
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	251,667	342,448	675,665

Equity Offering (Details) (USD $)	12 Months Ended			3 Months Ended
Equity Offering (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2012 Senior secured notes [Member]	Sep. 30, 2013 Common Stock [Member]	Jun. 30, 2012 Common Stock [Member]	Sep. 16, 2013 Common Stock [Member]	May 08, 2012 Common Stock [Member]
Equity Offering [Line Items]
Stock Issued During Period, Shares, New Issues					5,175,000	4,000,000
Stock Issued During Period, Value, Per Share Offering Price							$ 35.40	$ 20.75
Stock Issuance Costs					$ 8,500,000	$ 4,000,000
Proceeds from sale of common stock	0	174,670,000	79,040,000		174,700,000	79,000,000
Proceeds Used for Early Extinguishment of Debt				54,900,000
Extinguishment of Debt, Amount				$ 50,000,000

Acquisitions - Overview (Details) (Business Acquisition, Arminak & Associates [Member], USD $)	2 Months Ended	3 Months Ended	6 Months Ended
	Feb. 23, 2012	Mar. 31, 2012	Mar. 31, 2012	Mar. 31, 2014	Dec. 31, 2012 First Exercise Period [Member]	Dec. 31, 2012 Second Exercise Period [Member]
Redeemable Noncontrolling Interest by Exercise Period [Line Items]
Business Acquisition, Percentage of Voting Interests Acquired	70.00%
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net	$ 67,690,000
Business Combination, Consideration Transferred	67,690,000
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners				30.00%
Redeemable Noncontrolling Interest, Put or Call Option					10.00%	10.00%
Business Combination, Acquisition Related Costs		$ 1,000,000	$ 1,300,000

Acquisitions - Redeemable Noncontrolling Interest (Details) (USD $)	3 Months Ended								12 Months Ended							3 Months Ended	10 Months Ended	12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014 Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member]	Feb. 23, 2012 Fair Value, Inputs, Level 3 [Member]	Mar. 31, 2014 Business Acquisition, Arminak & Associates [Member]	Dec. 31, 2012 Business Acquisition, Arminak & Associates [Member]	Dec. 31, 2014 Business Acquisition, Arminak & Associates [Member]	Dec. 31, 2013 Business Acquisition, Arminak & Associates [Member]
Redeemable Noncontrolling Interest [Line Items]
Redeemable Noncontrolling Interest, Equity, Fair Value															$ 25,630,000
Payments to Acquire Business Three, Net of Cash Acquired																51,000,000
Distributions to noncontrolling interests																	(1,260,000)	(580,000)	(2,710,000)
Net income attributable to noncontrolling interest	0	0	0	810,000	1,430,000	1,320,000	910,000	860,000	810,000	4,520,000	2,410,000						2,410,000	810,000	4,520,000
Noncontrolling Interest, Change in Redemption Value										(890,000)									890,000
Redeemable noncontrolling interest, ending balance	0				29,480,000				0	29,480,000		29,710,000	29,480,000	26,780,000
Business Combination, Contingent Consideration Arrangements, Change in Range of Outcomes, Contingent Consideration, Liability, Value, High																7,000,000
Business Combination, Contingent Consideration, Liability																		$ 1,100,000

- Definition

As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

+ References+ Details

- Definition

The aggregate fair value as of the reporting date of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

+ References+ Details

Acquisitions - Purchase Price Allocation (Details) (USD $)

3 Months Ended

10 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

9 Months Ended

2 Months Ended

3 Months Ended

6 Months Ended

10 Months Ended

12 Months Ended

3 Months Ended

10 Months Ended

3 Months Ended

10 Months Ended

12 Months Ended

Dec. 31, 2014

Dec. 31, 2012

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2014

Allfast Fasteners [Member]

Oct. 16, 2014

Allfast Fasteners [Member]

Dec. 31, 2014

Allfast Fasteners [Member]

Oct. 17, 2014

Allfast Fasteners [Member]

Oct. 16, 2014

Allfast Fasteners [Member]

Trademarks and Trade Names [Member]

Oct. 16, 2014

Allfast Fasteners [Member]

Customer Relationships [Member]

Oct. 16, 2014

Allfast Fasteners [Member]

Technology and Other [Member]

Feb. 23, 2012

Business Acquisition, Arminak & Associates [Member]

Mar. 31, 2012

Business Acquisition, Arminak & Associates [Member]

Mar. 31, 2012

Business Acquisition, Arminak & Associates [Member]

Dec. 31, 2012

Business Acquisition, Arminak & Associates [Member]

Dec. 31, 2013

Business Acquisition, Arminak & Associates [Member]

Dec. 31, 2014

Business Acquisition, Arminak & Associates [Member]

Mar. 31, 2012

Business Acquisition, Arminak & Associates [Member]

Trademarks and Trade Names [Member]

Mar. 31, 2012

Business Acquisition, Arminak & Associates [Member]

Customer Relationships [Member]

Dec. 31, 2012

Business Acquisition, Arminak & Associates [Member]

Customer Relationships [Member]

Mar. 31, 2012

Business Acquisition, Arminak & Associates [Member]

Technology and Other [Member]

Dec. 31, 2012

Business Acquisition, Arminak & Associates [Member]

Technology and Other [Member]

Dec. 31, 2013

Series of Individually Immaterial Business Acquisitions [Member]

Dec. 31, 2012

Series of Individually Immaterial Business Acquisitions [Member]

Dec. 31, 2013

Series of Individually Immaterial Business Acquisitions [Member]

Trademarks and Trade Names [Member]

Dec. 31, 2013

Series of Individually Immaterial Business Acquisitions [Member]

Customer Relationships [Member]

Dec. 31, 2013

Series of Individually Immaterial Business Acquisitions [Member]

Technology and Other [Member]

Business Acquisition [Line Items]

Business Acquisition, Percentage of Voting Interests Acquired

100.00%

70.00%

100.00%

Payments to Acquire Businesses, Gross

$ 26,800,000

Consideration

Payments to Acquire Businesses, Net of Cash Acquired

382,880,000

105,790,000

89,880,000

351,220,000

105,790,000

Initial cash paid net of working capital adjustment

59,200,000

Business Acquisition, Deferred Purchase Price and Contingent Consideration

8,490,000

^[1]

12,370,000

^[2]

14,400,000

Business Combination, Consideration Transferred

366,950,000

67,690,000

118,160,000

Recognized amounts of identifiable assets acquired and liabilities assumed

Business Combination, Acquired Receivables, Fair Value

8,950,000

8,760,000

12,420,000

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Inventory

19,850,000

4,200,000

27,350,000

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangibles

165,000,000

^[3]

48,400,000

^[4]

41,140,000

^[5]

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment

26,490,000

20,930,000

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Deferred Income Taxes

(8,900,000)

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Long-term Liabilities

(1,610,000)

(18,580,000)

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net

218,010,000

57,930,000

79,330,000

Redeemable noncontrolling interest

(25,630,000)

Goodwill

466,660,000

270,940,000

466,660,000

309,660,000

270,940,000

148,940,000

^[6]

35,390,000

^[7]

38,830,000

^[8]

Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net

366,950,000

67,690,000

118,160,000

Contingent Consideration Arrangements

Business Acquisition, Deferred Purchase Price

15,730,000

^[9]

9,800,000

Business Acquisition, Contingent Consideration

2,600,000

Contingent consideration low value

8,000,000

3,100,000

Contingent consideration high value

9,000,000

4,100,000

Contingent consideration paid

4,900,000

Deferred Purchase Price, Tax Reimbursements

8,700,000

Deferred Purchase Price, Obligations Assumed on Behalf Seller

7,000,000

Deferred Purchase Price, Amount Paid in 2014

4,100,000

Acquired Intangible Assets Other than Goodwill

Acquired Finite-lived Intangible Asset, Amount

83,000,000

33,000,000

7,500,000

27,600,000

1,500,000

Acquired Indefinite-lived Intangible Asset, Amount

49,000,000

7,900,000

12,100,000

Finite-Lived Intangible Assets, Useful Life

18 years

15 years

10 years

8 years

10 years

4 years

Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual

9,100,000

65,900,000

Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual

1,300,000

8,000,000

Business Acquisition, Transaction Costs

2,200,000

1,000,000

1,300,000

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets, Prepaid Expense and Other Assets

340,000

2,450,000

17,480,000

Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities

$ (2,620,000)

$ (4,270,000)

$ (12,510,000)

[1]	The contingent consideration represented the Company's best estimate, based on its review, at the time of purchase, of the underlying potential obligations estimated at a range of $8 million to $9 million, of certain Seller tax-related liabilities for which the Company indemnified the Sellers as part of the purchase agreement. During 2012, the Company paid $4.9 million of additional purchase price related to the contingent consideration. No additional amounts were paid during 2013 or 2014. The remaining liability range of $3.1 million to $4.1 million continues to represent the Company's best estimate of the remaining potential obligation at December 31, 2014
[2]	Deferred/contingent consideration includes approximately $9.8 million of both short-term and long-term deferred purchase price, based on set amounts and fixed payment schedules per the purchase agreement, and an additional $2.6 million of contingent consideration to be paid based on a multiple of future earnings, as defined.
[3]	(b) Consists of approximately $83.0 million of customer relationships with an estimated useful life of 18 years, $33.0 million of technology and other intangible assets with an estimated useful life of 15 years and $49.0 million of trademark/tradename with an indefinite useful life.
[4]	Consists of $33.0 million of customer relationships with an estimated 10 year useful life, $7.9 million of trademarks/trade names with an indefinite useful life and $7.5 million of technology and other intangible assets with an estimated eight year useful life
[5]	Consists of approximately $27.6 million of customer relationships with an estimated weighted average useful life of 10 years, $1.5 million of technology and other intangible assets with an estimated weighted average useful life of four years and $12.1 million of trademark/trade names with an indefinite useful life
[6]	(c) All of the goodwill was assigned to the Company's Aerospace reportable segment and is expected to be deductible for tax purposes.
[7]	All of the goodwill was assigned to the Company's Packaging reportable segment and is expected to be deductible for tax purposes
[8]	Goodwill includes approximately $2.9 million of bargain purchase gain resulting from the acquisition of the towing technology and business assets of AL-KO, which is included in other expense, net in the accompanying consolidated statement of income for the year ended December 31, 2013.
[9]	(a) Of the deferred purchase price, approximately $8.7 million, represents the Company's best estimate of the underlying obligations for certain tax amounts the Company has agreed to reimburse the previous owner in order to acquire additional tax attributes. In addition, it includes approximately $7.0 million of other liabilities which the Company has agreed to pay on behalf of the previous owner, of which approximately $4.1 million was paid during 2014.

Acquisitions - Results of Operations (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	10 Months Ended
	Dec. 31, 2014	Dec. 31, 2012
Business Combinations [Abstract]
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	$ 9.1	$ 65.9
Business Combination, Results Of Operations Of Acquiree Since Acquisition	$ 1.3	$ 8.0

Acquisitions - Pro Forma (Details) (USD $)

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Dec. 31, 2011

Business Acquisition, Pro Forma Information

Net Sales

$ 1,548,220,000

^[1]

$ 1,442,490,000

^[1]

$ 1,280,940,000

^[2]

$ 1,144,020,000

^[2]

Net income attributable to TriMas Corporation

69,430,000

^[1]

76,260,000

^[1]

35,850,000

^[2]

54,540,000

^[2]

Allfast Fasteners [Member]

Business acquisition, pre-tax pro-forma amortization expense

6,000,000

6,800,000

Business acquisition, pre-tax pro-forma interest expense

$ 4,900,000

$ 7,100,000

[1]

(a)The supplemental pro forma results reflect certain material adjustments, as follows:1.Pre-tax pro forma adjustments for amortization expense of $6.0 million and $6.8 million for the years ended December 31, 2014 and December 31, 2013 on the intangible assets associated with the acquisition. 2.Pre-tax pro forma adjustments of $4.9 million and $7.1 million for the years ended December 31, 2014 and December 31, 2013, respectively, to reflect interest expense incurred on the incremental term loan A and revolver borrowings incurred in order to fund the acquisition.

[2]

The supplemental pro forma results reflect certain adjustments, such as adjustments for acquisition costs incurred and purchase accounting adjustments related to step-up in value and subsequent amortization of inventory and intangible assets

Acquisitions Acquisitions - Other Acquisitions (Details) (USD $)

3 Months Ended

12 Months Ended

3 Months Ended

9 Months Ended

12 Months Ended

2 Months Ended

Dec. 31, 2014

Sep. 30, 2014

Jun. 30, 2014

Mar. 31, 2014

Dec. 31, 2013

Sep. 30, 2013

Jun. 30, 2013

Mar. 31, 2013

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Sep. 30, 2014

Allfast Fasteners [Member]

Oct. 16, 2014

Allfast Fasteners [Member]

Jun. 30, 2014

Allfast Fasteners [Member]

Oct. 17, 2014

Allfast Fasteners [Member]

Dec. 31, 2013

Series of Individually Immaterial Business Acquisitions [Member]

Dec. 31, 2012

Series of Individually Immaterial Business Acquisitions [Member]

Dec. 31, 2012

Business Acquisition, Martinic [Member]

Dec. 31, 2012

Business Acquisition, Wulfrun [Member]

Mar. 31, 2013

Business Acquisition, Witter [Domain]

Dec. 31, 2013

Business Acquisition, AL-KO [Domain]

Jun. 30, 2013

Business Acquisition, AL-KO [Domain]

Sep. 30, 2013

Business Acquisition, Mac Fasteners [Domain]

Sep. 30, 2013

Business Acquisition - DHF [Domain]

Jun. 30, 2012

CIFAL [Member]

Jun. 30, 2012

Engetran [Member]

Jun. 30, 2012

Trail Com [Member]

Feb. 23, 2012

Business Acquisition, Arminak & Associates [Member]

Business Acquisition [Line Items]

Business Combination, Consideration Transferred

$ 366,950,000

$ 118,160,000

$ 67,690,000

Payments to Acquire Businesses, Net of Cash Acquired

382,880,000

105,790,000

89,880,000

351,220,000

105,790,000

Business Acquisition, Deferred Purchase Price and Contingent Consideration

12,370,000

^[1]

14,400,000

8,490,000

^[2]

Payments to Acquire Business Two, Net of Cash Acquired

27,500,000

Business Acquisition, Percentage of Voting Interests Acquired

100.00%

70.00%

Business Acquisition, Cost of Acquired Entity, Cash Paid

26,800,000

Net sales

350,570,000

380,120,000

403,000,000

365,390,000

320,190,000

354,910,000

377,750,000

335,750,000

1,499,080,000

1,388,600,000

1,267,510,000

10,000,000

13,000,000

10,000,000

20,000,000

16,000,000

17,000,000

12,000,000

9,000,000

6,000,000

12,000,000

Business Combination, Bargain Purchase, Gain Recognized, Amount

$ 0

$ 2,880,000

$ 0

$ 2,900,000

[1]

Deferred/contingent consideration includes approximately $9.8 million of both short-term and long-term deferred purchase price, based on set amounts and fixed payment schedules per the purchase agreement, and an additional $2.6 million of contingent consideration to be paid based on a multiple of future earnings, as defined.

[2]

The contingent consideration represented the Company's best estimate, based on its review, at the time of purchase, of the underlying potential obligations estimated at a range of $8 million to $9 million, of certain Seller tax-related liabilities for which the Company indemnified the Sellers as part of the purchase agreement. During 2012, the Company paid $4.9 million of additional purchase price related to the contingent consideration. No additional amounts were paid during 2013 or 2014. The remaining liability range of $3.1 million to $4.1 million continues to represent the Company's best estimate of the remaining potential obligation at December 31, 2014

- Definition

In a business combination in which the amount of net identifiable assets acquired and liabilities assumed exceeds the aggregate consideration transferred or to be transferred (as defined), this element represents the amount of gain recognized by the entity.

+ References+ Details

Discontinued Operations - Narrative (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			3 Months Ended
	Sep. 30, 2014 NI Industries business [Member]	Jun. 30, 2013 Precision Tool Cutting and Specialty Fittings Line of Business [Member]	Dec. 31, 2014 Precision Tool Cutting and Specialty Fittings Line of Business [Member]	Dec. 31, 2014 Specialty Laminates, Jacketings and Insulation Tapes Line of Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Sale of Productive Assets	$ 6.7
Proceeds from Divestiture of Businesses		1.0
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High			1.3
Restructuring Charges				1.8
Fair Value Disclosure, Off-balance Sheet Risks, Amount, Asset			$ 2.5

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References+ Details

Discontinued Operations - Results of Discontinued Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Discontinued Operations and Disposal Groups [Abstract]
Net sales									$ 3,480	$ 6,260	$ 5,400
Income from discontinued operations, before income tax expense									4,040	1,670	(230)
Income tax expense									(1,490)	(550)	90
Income from discontinued operations, net of income tax expense	$ (1,210)	$ 3,840	$ (230)	$ 150	$ 840	$ (300)	$ 510	$ 70	$ 2,550	$ 1,120	$ (140)

- Definition

Overall income (loss) from a disposal group that is classified as a component of the entity, before income tax, reported as a separate component of income before extraordinary items. Includes the following (before income tax): income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

+ References+ Details

- Definition

Tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items. Includes the tax effects of the following: income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

+ References+ Details

- Definition

Amount of income (loss) from a disposal group, net of income tax before extraordinary items allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

+ References+ Details

Facility Closures (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended	3 Months Ended
	Dec. 31, 2013 Facility Closing Goshen [Member]	Mar. 31, 2013 Facility Closing Goshen [Member] employees	Dec. 31, 2012 Facility Closing Goshen [Member] employees	Dec. 31, 2013 Facility Closing Goshen [Member]	Dec. 31, 2012 Facility Closing Goshen [Member] Cost of Sales [Member]	Dec. 31, 2013 Facility Closing Goshen [Member] Cost of Sales [Member]	Dec. 31, 2012 Facility Closing Goshen [Member] Selling, General and Administrative Expenses [Member]	Dec. 31, 2013 Facility Closing Goshen [Member] Selling, General and Administrative Expenses [Member]	Dec. 31, 2014 Facility Closing Sao Paulo, Brazil [Member]	Dec. 31, 2014 Facility Closing Sao Paulo, Brazil [Member] employees	Sep. 30, 2013 Sale of Business, Italy [Member]
Restructuring Cost and Reserve [Line Items]
Future Lease Obligation, Net of Sublease Income	$ 4.6									$ 3.9
Severance Costs			1.2	4.0	0.8	3.6	0.4	0.4		0.5
Restructuring and Related Cost, Expected Number of Positions Eliminated		350	70							60
Accelerated Depreciation			0.2	2.4
Proceeds from Divestiture of Businesses											10.3
Gain (Loss) on Disposition of Business											10.5
Translation Adjustment Functional to Reporting Currency, Loss (Gain), Reclassified to Earnings, Net of Tax									$ 1.3		$ (7.9)

- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References+ Details

Goodwill and Other Intangible Assets - Goodwill Narrative (Details)	12 Months Ended
	Dec. 31, 2010 Minimum [Member]	Dec. 31, 2014 Energy Reporting Unit [Member] Rate
Goodwill [Line Items]
Estimated Fair Value Exceeding Carrying Value, Percentage	30.00%
Fair Value Inputs, Valuation Method, Weighting Percentage Used, Income-Based Approach		75.00%
Fair Value Inputs, Valuation Method, Weighting Percentage Used, Market-Based Approach		25.00%
Fair Value Inputs, Discount Rate		13.00%
Fair Value Inputs, Long-term Revenue Growth Rate		3.00%
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount		20.00%
Sensitivity Analysis, Fair Value, Goodwill, Impact of 1 Percent Change in Long Term Revenue Growth Rate		1.00%
Sensitivity Analysis of Fair Value, Goodwill, Impact of 1 Percent Change in Discount Rate		1.00%

Goodwill and Other Intangible Assets - Goodwill Rollforward (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Roll Forward]
Balance, beginning	$ 309,660	$ 270,940
Goodwill from acquisitions	164,860	43,040
Goodwill, Written off Related to Sale of Business Unit		(2,060)
Foreign currency translation	(7,860)	(2,260)
Balance, ending	466,660	309,660
Packaging [Member]
Goodwill [Roll Forward]
Balance, beginning	158,060	158,980
Goodwill from acquisitions	15,810	0
Goodwill, Written off Related to Sale of Business Unit		(2,060)
Foreign currency translation	(4,520)	1,140
Balance, ending	169,350	158,060
Energy [Member]
Goodwill [Roll Forward]
Balance, beginning	75,920	64,210
Goodwill from acquisitions	0	14,440
Goodwill, Written off Related to Sale of Business Unit		0
Foreign currency translation	(2,740)	(2,730)
Balance, ending	73,180	75,920
Aerospace [Member]
Goodwill [Roll Forward]
Balance, beginning	61,080	41,130
Goodwill from acquisitions	149,050	19,950
Goodwill, Written off Related to Sale of Business Unit		0
Foreign currency translation	0	0
Balance, ending	210,130	61,080
Engineered Components [Member]
Goodwill [Roll Forward]
Balance, beginning	7,420	3,180
Goodwill from acquisitions	0	4,240
Goodwill, Written off Related to Sale of Business Unit		0
Foreign currency translation	0	0
Balance, ending	7,420	7,420
Cequent Asia Pacific Europe Africa [Member]
Goodwill [Roll Forward]
Balance, beginning	0	0
Goodwill from acquisitions	0	0
Goodwill, Written off Related to Sale of Business Unit		0
Foreign currency translation	0	0
Balance, ending	0	0
Cequent Americas [Member]
Goodwill [Roll Forward]
Balance, beginning	7,180	3,440
Goodwill from acquisitions	0	4,410
Goodwill, Written off Related to Sale of Business Unit		0
Foreign currency translation	(600)	(670)
Balance, ending	$ 6,580	$ 7,180

Goodwill and Other Intangible Assets - Other Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified																	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014 Customer Relationships [Member]	Dec. 31, 2013 Customer Relationships [Member]	Dec. 31, 2014 Technology and Other [Member]	Dec. 31, 2013 Technology and Other [Member]	Dec. 31, 2014 Trademarks and Trade Names [Member]	Dec. 31, 2013 Trademarks and Trade Names [Member]	Dec. 31, 2014 Useful Life Five to Twelve Years [Member] Customer Relationships [Member]	Dec. 31, 2013 Useful Life Five to Twelve Years [Member] Customer Relationships [Member]	Dec. 31, 2014 Useful Life Fifteen to Twentyfive Years [Member] Customer Relationships [Member]	Dec. 31, 2013 Useful Life Fifteen to Twentyfive Years [Member] Customer Relationships [Member]	Dec. 31, 2014 Useful Life One to Fifteen Years [Member] Technology and Other [Member]	Dec. 31, 2013 Useful Life One to Fifteen Years [Member] Technology and Other [Member]	Dec. 31, 2014 Useful Life Seventeen to Thirty Years [Member] Technology and Other [Member]	Dec. 31, 2013 Useful Life Seventeen to Thirty Years [Member] Technology and Other [Member]	Dec. 31, 2014 Minimum [Member]	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2014 Minimum [Member] Customer Relationships [Member]	Dec. 31, 2014 Minimum [Member] Technology and Other [Member]	Dec. 31, 2014 Minimum [Member] Useful Life Five to Twelve Years [Member] Customer Relationships [Member]	Dec. 31, 2014 Minimum [Member] Useful Life Fifteen to Twentyfive Years [Member] Customer Relationships [Member]	Dec. 31, 2014 Minimum [Member] Useful Life One to Fifteen Years [Member] Technology and Other [Member]	Dec. 31, 2014 Minimum [Member] Useful Life Seventeen to Thirty Years [Member] Technology and Other [Member]	Dec. 31, 2014 Maximum [Member]	Dec. 31, 2014 Maximum [Member] Customer Relationships [Member]	Dec. 31, 2014 Maximum [Member] Technology and Other [Member]	Dec. 31, 2014 Maximum [Member] Useful Life Five to Twelve Years [Member] Customer Relationships [Member]	Dec. 31, 2014 Maximum [Member] Useful Life Fifteen to Twentyfive Years [Member] Customer Relationships [Member]	Dec. 31, 2014 Maximum [Member] Useful Life One to Fifteen Years [Member] Technology and Other [Member]	Dec. 31, 2014 Maximum [Member] Useful Life Seventeen to Thirty Years [Member] Technology and Other [Member]
Intangible Assets, excluding Goodwill [Line Items]
Estimated Fair Value of Indefinite-lived Intangible Assets Exceeding Carrying Value, Percentage																		35.00%
Finite-Lived Intangible Assets, Useful Life																	1 year		5 years	1 year	5 years	15 years	1 year	17 years	30 years	25 years	30 years	12 years	25 years	15 years	30 years
Finite-lived intangible assets, gross carrying amount			$ 347,070	$ 259,700	$ 115,950	$ 82,970			$ 109,460	$ 105,090	$ 237,610	$ 154,610	$ 71,830	$ 38,980	$ 44,120	$ 43,990
Finite-lived intangible assets, accumulated amortization	(207,570)	(184,710)	(147,760)	(130,460)	(59,810)	(54,250)			(44,370)	(36,260)	(103,390)	(94,200)	(32,250)	(28,940)	(27,560)	(25,310)
Indefinite-lived intangible assets, gross carrying amount							108,480	61,570
Total finite and indefinite-lived other intangible assets, gross carrying amount	$ 571,500	$ 404,240

Goodwill and Other Intangible Assets - Other Intangible Assets Amortization Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Amortization of Intangible Assets [Line Items]
Amortization of intangible assets	$ 23,710	$ 19,770	$ 19,820
Continuing Operations [Member]
Amortization of Intangible Assets [Line Items]
Amortization of intangible assets	23,710	19,770	19,820
Continuing Operations [Member] \| Cost of Sales [Member] \| Technology and Other [Member]
Amortization of Intangible Assets [Line Items]
Amortization of intangible assets	5,310	4,870	4,940
Continuing Operations [Member] \| Selling, General and Administrative Expenses [Member] \| Customer Relationships [Member]
Amortization of Intangible Assets [Line Items]
Amortization of intangible assets	$ 18,400	$ 14,900	$ 14,880

Goodwill and Other Intangible Assets - Expected Amortization Expense (Details) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months (2015)	$ 28,760
Finite-Lived Intangible Assets, Amortization Expense, Year Two (2016)	27,970
Finite-Lived Intangible Assets, Amortization Expense, Year Three (2017)	27,600
Finite-Lived Intangible Assets, Amortization Expense, Year Four (2018)	24,020
Finite-Lived Intangible Assets, Amortization Expense, Year Five (2019)	$ 23,100

Inventories (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Inventory Disclosure [Abstract]
Finished goods	$ 194,690	$ 173,140
Work in process	30,790	31,880
Raw materials	69,150	65,670
Total inventories	$ 294,630	$ 270,690

- Definition

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

+ References+ Details

Property and Equipment, Net - Property and Equipment Table (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 468,260	$ 419,440
Less: Accumulated depreciation	235,610	213,290
Property and equipment, net	232,650	206,150
Land and Land Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	15,000	5,520
Building [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	69,820	61,960
Machinery and Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 383,440	$ 351,960

Accrued Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accrued Liabilities, Current [Abstract]
Self-insurance	$ 12,510	$ 12,610
Wages and bonus	22,340	23,670
Other	66,200	48,850
Total accrued liabilities	$ 101,050	$ 85,130

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities to mitigate potential loss from various risks or to satisfy a promise to provide certain coverage's to employees. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References+ Details

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable arising from transactions not otherwise specified in the taxonomy. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References+ Details

Long-term Debt - Debt Table (Details) (USD $)								3 Months Ended
Long-term Debt - Debt Table (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2014 Credit Agreement [Member]	Dec. 31, 2013 Credit Agreement [Member]	Dec. 31, 2014 Receivables Facility and other [Member] [Member]	Dec. 31, 2013 Receivables Facility and other [Member] [Member]	Dec. 31, 2012 Senior secured notes [Member]	Dec. 31, 2014 Revolving Credit Facility [Member]	Dec. 31, 2014 Senior Secured Term Loan A [Member]
Debt Instrument [Line Items]
Debt Instrument, Maturity Date								Oct. 16, 2018	Oct. 16, 2018
Debt	$ 639,330,000	$ 305,740,000	$ 559,530,000	$ 246,130,000	$ 79,800,000	$ 59,610,000
Current maturities, debt	23,860,000	10,290,000
Long-term debt	615,470,000	295,450,000
Debt Instrument, Interest Rate, Stated Percentage							9.75%
Debt Instrument, Face Amount									175,000,000
Line of Credit Facility, Maximum Borrowing Capacity								$ 575,000,000

Long-term Debt - U.S. Bank Debt (Details) (USD $)	3 Months Ended	12 Months Ended					12 Months Ended			3 Months Ended	1 Months Ended	12 Months Ended		3 Months Ended		12 Months Ended				3 Months Ended
Long-term Debt - U.S. Bank Debt (Details) (USD $)	Dec. 31, 2014 term loan A facility [Member]	Dec. 31, 2014 term loan A facility [Member]	Dec. 31, 2014 Incremental senior secured term loan A borrowing [Member]	Dec. 31, 2013 Revolving credit and term loan facilities [Member]	Dec. 31, 2012 Revolving credit and term loan facilities [Member]	Dec. 31, 2014 Revolving credit and term loan facilities [Member]	Dec. 31, 2014 Senior Secured Term Loan A [Member]	Dec. 31, 2014 U.S. bank debt and receivables facility [Member]	Dec. 31, 2013 U.S. bank debt and receivables facility [Member]	Dec. 31, 2014 Incremental senior secured term loan A borrowing [Member]	Dec. 31, 2014 Receivables Facility [Member]	Dec. 31, 2014 Receivables Facility [Member]	Dec. 31, 2013 Receivables Facility [Member]	Dec. 31, 2014 Senior Secured Term Loan A [Member]	Dec. 31, 2014 Revolving Credit Facility [Member]	Dec. 31, 2014 Revolving Credit Facility [Member]	Dec. 31, 2013 Revolving Credit Facility [Member]	Dec. 31, 2014 Letters of credit [Member]	Dec. 31, 2013 Letters of credit [Member]	Dec. 31, 2014 Principal payment, March 2014 through December 2016 [Member] term loan A facility [Member]	Dec. 31, 2014 Principal payment, March 2017 through December 2018 [Member] term loan A facility [Member]	Dec. 31, 2014 Fair Value, Inputs, Level 2 [Member] term loan A facility [Member] Rate	Dec. 31, 2013 Fair Value, Inputs, Level 2 [Member] term loan A facility [Member] Rate
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 450,000,000	$ 450,000,000	$ 275,000,000							$ 275,000,000				$ 175,000,000
Line of Credit Facility, Capacity Available for Specific Purpose Other than for Trade Purchases															75,000,000	75,000,000
Interest rate, LIBOR plus			1.825%				1.50%				1.00%					1.50%
Line of Credit Facility, Maximum Borrowing Capacity															575,000,000	575,000,000		75,000,000
Debt Instrument, Maturity Date										Oct. 16, 2018		Oct. 16, 2018	Oct. 12, 2017	Oct. 16, 2018	Oct. 16, 2018
Incremental debt commitments capacity						300,000,000
Requirements prepayments under term loan A facility		0
Letters of Credit Outstanding, Amount																		21,900,000	24,100,000
Revolving Credit Facility, Amount Outstanding															118,100,000	118,100,000	71,100,000
Revolving Credit Facility, Remaining Borrowing Capacity															435,000,000	435,000,000	479,800,000
Debt Instrument, Unused Borrowing Capacity, Amount								192,000,000	360,300,000		1,600,000	1,600,000	20,200,000
Term Loan Facility, Quarterly Principal Payments																				5,800,000	8,700,000
Term Loan Facility, Principal Payment on Maturity Date	333,800,000
Payments of Debt Extinguishment and Issuance Costs			3,800,000	3,600,000	6,400,000
Deferred Finance Costs, Noncurrent, Net			400,000	3,100,000	4,500,000
Debt Issuance Cost			3,400,000	500,000	1,900,000
Write off of Deferred Debt Issuance Cost				$ 1,900,000	$ 1,100,000
Long-term Debt, Fair Value, % of par value																						99.50%	99.90%

Long-term Debt - Receivables Facility (Details) (Receivables Facility [Member], USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Minimum [Member]	Dec. 31, 2013 Maximum [Member]
Debt Instrument [Line Items]
Secured debt, Maximum Borrowing Capacity	$ 105.0	$ 105.0
Debt cost, 3-month LIBOR plus	1.00%				1.20%	1.35%
Debt Instrument, Unused Borrowing Capacity, Fee percentage		0.35%	0.40%
Debt Instrument, Maturity Date		Oct. 16, 2018	Oct. 12, 2017
Receivables facility debt outstanding	78.7	78.7	57.0
Receivables facility debt available but not utilized	1.6	1.6	20.2
Receivables facililty, debt aggregate costs		$ 1.3	$ 1.4	$ 1.3
Average liquidation period, Receivables pool		1.7
Average discount rate, Receivables facility	1.80%	1.80%

Long-term Debt - Non-U.S. Bank Debt (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Foreign Debt [Member]
Short-term Debt [Line Items]
Debt Instrument, Maturity Date, Description	August 31, 2015
Foreign Debt, Amount Outstanding	$ 0	$ 0.7
Short-term Debt, Percentage Bearing Variable Interest Rate		2.70%
Uncommitted Working Capital Facility [Domain]
Short-term Debt [Line Items]
Debt Instrument, Maturity Date, Description	May 29, 2015
Foreign Debt, Amount Outstanding	12.5
Short-term Debt, Percentage Bearing Variable Interest Rate	2.75%
Overdraft Facility [Member]
Short-term Debt [Line Items]
Foreign Debt, Amount Outstanding	0.1
Short-term Debt, Percentage Bearing Variable Interest Rate	0.75%
Overdraft Facility	$ 1.0

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References+ Details

Long-term Debt - Senior secured notes (Details) (Senior secured notes [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2012
Senior secured notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage		9.75%
Extinguishment of Debt, Amount	$ 50.0
Proceeds Used for Early Extinguishment of Debt	54.9
Non-cash Debt Extinguishment Costs		8.1
Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction		$ 35.7

Long-term Debt - Long-term Debt Maturities (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Long-term Debt, Fiscal Year Maturity
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months (2014)	$ 23,860
Long-term Debt, Maturities, Repayments of Principal in Year Two (2015)	23,530
Long-term Debt, Maturities, Repayments of Principal in Year Three (2016)	35,000
Long-term Debt, Maturities, Repayments of Principal in Year Four (2017)	556,940
Long-term Debt, Maturities, Repayments of Principal in Year Five (2018)	0
Long-term Debt	$ 639,330

- Definition

Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Long-term Debt - Debt Issuance Costs (Details) (USD $)	12 Months Ended
Long-term Debt - Debt Issuance Costs (Details) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Debt Instrument [Line Items]
Unamortized Debt Issuance Costs	$ 7,400,000	$ 8,700,000
Amortization of Debt Issuance Costs	1,940,000	1,780,000	2,490,000
Senior secured notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage			9.75%
Debt Issuance Costs Incurred During Noncash or Partial Noncash Transaction			$ 35,700,000

Derivative Instruments - Derivative Narrative (Details) (USD $)	12 Months Ended				9 Months Ended	12 Months Ended						3 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Oct. 10, 2012 Interest Rate Swap [Member] Cash Flow Hedging [Member]	Oct. 10, 2012 Interest Rate Swap [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2013 Interest Rate Swap [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Interest Expense [Member]	Dec. 31, 2013 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Interest Expense [Member]	Dec. 31, 2012 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Interest Expense [Member]	Dec. 31, 2014 Senior Secured Term Loan A [Member] Interest Rate Swap [Member] Cash Flow Hedging [Member]	Dec. 31, 2014 Senior Secured Term Loan B [Member] Interest Rate Swap [Member] Cash Flow Hedging [Member]	Oct. 15, 2013 Senior Secured Term Loan B [Member] Interest Rate Swap [Member] Cash Flow Hedging [Member]	Dec. 31, 2014 Senior Secured Term Loan B [Member] Interest Rate Swap [Member] Cash Flow Hedging [Member] Interest Expense [Member]	Dec. 31, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member]	Dec. 31, 2013 Not Designated as Hedging Instrument [Member] Interest Rate Swap [Member] Interest Expense [Member]
Derivative [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimate of Time to Transfer															12 months
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred															$ (200,000)
Derivative, Fixed Interest Rate				1.80%							0.74%		2.05%
Derivative, Cash Received on Hedge												3,300,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net								(970,000)	2,510,000	(250,000)				2,000,000
Derivative, Notional Amount				100,000,000							175,000,000		150,000,000
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion					(1,000,000)	680,000	1,060,000
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	200,000	1,700,000	1,000,000		(600,000)									1,300,000
Derivatives, Loss on Derivatives, Net of Tax																600,000
Derivative, Loss on Derivatives, Amount of Tax																$ 400,000

Derivative Instruments - Designated as hedging, Financial Position (Details) (USD $)	Dec. 31, 2014 Designated as Hedging Instrument [Member]	Dec. 31, 2013 Designated as Hedging Instrument [Member]	Dec. 31, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Other Assets [Member]	Dec. 31, 2013 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Other Assets [Member]	Dec. 31, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Accrued Liabilities [Member]	Dec. 31, 2013 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Accrued Liabilities [Member]	Dec. 31, 2014 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Other long-term liabilities [Member]	Dec. 31, 2013 Interest Rate Swap [Member] Designated as Hedging Instrument [Member] Other long-term liabilities [Member]	Oct. 10, 2012 Cash Flow Hedging [Member] Interest Rate Swap [Member]	Dec. 31, 2014 Cash Flow Hedging [Member] Derivative, March 2015 Maturity [Member] Foreign Exchange Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative, Notional Amount									$ 100,000,000	$ 12,000,000
Asset Derivatives	940,000		1,270,000	2,080,000
Liability Derivatives		$ 1,720,000			$ (180,000)	$ (360,000)	$ (150,000)	$ 0

- Definition

Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

+ References+ Details

- Definition

Fair value, after offset of derivative asset, of financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, elected not to be and before offset against a right to receive collateral under a master netting arrangement. Includes liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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Derivative Instruments - Designated as hedging, Financial Performance (Details) (Designated as Hedging Instrument [Member], USD $)	9 Months Ended	12 Months Ended							12 Months Ended
	Oct. 10, 2012 Interest Rate Swap [Member]	Dec. 31, 2014 Interest Rate Swap [Member]	Dec. 31, 2013 Interest Rate Swap [Member]	Dec. 31, 2014 Interest Rate Swap [Member] Interest Expense [Member]	Dec. 31, 2013 Interest Rate Swap [Member] Interest Expense [Member]	Dec. 31, 2012 Interest Rate Swap [Member] Interest Expense [Member]	Dec. 31, 2014 Foreign Exchange Contract [Member]	Dec. 31, 2013 Foreign Exchange Contract [Member]	Dec. 31, 2014 Foreign Exchange Contract [Member] Cost of Sales [Member]	Dec. 31, 2013 Foreign Exchange Contract [Member] Cost of Sales [Member]	Dec. 31, 2012 Foreign Exchange Contract [Member] Cost of Sales [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Derivative Instruments, Gain (Loss) Reclassification from Accumulated OCI to Income, Estimated Net Amount to be Transferred									$ (100,000)
Derivative Instruments, Gain (Loss) Recognized in Other Comprehensive Income (Loss), Effective Portion	(1,000,000)	680,000	1,060,000
Derivative Instruments, Gain (Loss) Reclassified from Accumulated OCI into Income, Effective Portion, Net				(970,000)	2,510,000	(250,000)			170,000	0	0
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax							$ (70,000)	$ 0

- Definition

Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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Derivative Instruments - Fair Value Measurements (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Interest Rate Swap [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	$ 1,090	$ 1,720
Interest Rate Swap [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	0	0
Interest Rate Swap [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	1,090	1,720
Interest Rate Swap [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Asset Derivatives	0	0
Foreign Exchange Contract [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	(150)
Foreign Exchange Contract [Member] \| Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0
Foreign Exchange Contract [Member] \| Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	(150)
Foreign Exchange Contract [Member] \| Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	$ 0

- Definition

Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset.

+ References+ Details

- Definition

+ References+ Details

Leases (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Leases [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 29,670
Operating Leases, Future Minimum Payments, Due in Two Years	29,100
Operating Leases, Future Minimum Payments, Due in Three Years	26,690
Operating Leases, Future Minimum Payments, Due in Four Years	23,390
Operating Leases, Future Minimum Payments, Due in Five Years	20,280
Operating Leases, Future Minimum Payments, Due Thereafter	44,830
Operating Leases, Future Minimum Payments Due	$ 173,960

Commitments and Contingencies - Asbestos Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended		288 Months Ended	12 Months Ended
	Dec. 31, 2014 Minimum [Member]	Dec. 31, 2014 Maximum [Member]	Dec. 31, 2014 Asbestos [Member]	Dec. 31, 2014 Asbestos [Member] Pending Litigation [Member] claimants cases
Loss Contingencies [Line Items]
Number of pending cases				1,109
Number of pending claims				7,992
Number of pending claims seeking specific amounts of damages				117
Total settlement costs			$ 7.4
Estimated time until primary insurance is exhausted	1 year	2 years
Percentage of settlement and defense costs covered by insurance			40.00%

Commitments and Contingencies - Asbestos Claimant and Settlement (Details) (Asbestos [Member], USD $)	12 Months Ended
	Dec. 31, 2014 claimants	Dec. 31, 2013 claimants	Dec. 31, 2012 claimants
Asbestos [Member]
Loss Contingencies [Line Items]
Number of pending claims at the beginning of period	7,975	7,880	8,048
Number of pending claims filed during period	210	360	367
Number of pending claims dismissed during period	155	226	519
Number of pending claims settled during period	38	39	16
Average settlement amount per claim during period	$ 18,734	$ 8,294	$ 14,513
Total defense costs during period	$ 2,800,000	$ 2,620,000	$ 2,650,000

Commitments and Contingencies - Asbestos Damages Sought (Details) (Asbestos [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Compensatory and Punitive Damages [Member] \| Range 1 [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	$ 0
Compensatory and Punitive Damages [Member] \| Range 1 [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	5.0
Compensatory and Punitive Damages [Member] \| Range 2 [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	5.0
Compensatory and Punitive Damages [Member] \| Range 2 [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	10.0
Compensatory and Punitive Damages [Member] \| Range 3 [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	10.0
Compensatory Only Damages [Member] \| Range 1 [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	0
Compensatory Only Damages [Member] \| Range 1 [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	0.6
Compensatory Only Damages [Member] \| Range 2 [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	0.6
Compensatory Only Damages [Member] \| Range 2 [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	5.0
Compensatory Only Damages [Member] \| Range 3 [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	5.0
Punitive Only Damages [Member] \| Range 1 [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	0
Punitive Only Damages [Member] \| Range 1 [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	2.5
Punitive Only Damages [Member] \| Range 2 [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	2.5
Punitive Only Damages [Member] \| Range 2 [Member] \| Maximum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	5.0
Punitive Only Damages [Member] \| Range 3 [Member] \| Minimum [Member]
Loss Contingencies [Line Items]
Specified amount of damages sought	$ 5.0
Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	117
Pending Litigation [Member] \| Compensatory and Punitive Damages [Member] \| Range 1 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	77
Pending Litigation [Member] \| Compensatory and Punitive Damages [Member] \| Range 2 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	24
Pending Litigation [Member] \| Compensatory and Punitive Damages [Member] \| Range 3 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	16
Pending Litigation [Member] \| Compensatory Only Damages [Member] \| Range 1 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	24
Pending Litigation [Member] \| Compensatory Only Damages [Member] \| Range 2 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	58
Pending Litigation [Member] \| Compensatory Only Damages [Member] \| Range 3 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	35
Pending Litigation [Member] \| Punitive Only Damages [Member] \| Range 1 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	111
Pending Litigation [Member] \| Punitive Only Damages [Member] \| Range 2 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	5
Pending Litigation [Member] \| Punitive Only Damages [Member] \| Range 3 [Member]
Loss Contingencies [Line Items]
Number of pending claims seeking specific amounts of damages	1

Commitments and Contingencies Metaldyne Corporation (Details) (USD $)	3 Months Ended
	Mar. 31, 2007	Dec. 31, 2014
Loss Contingencies [Line Items]
Common Stock Dividends, Shares	4,825,587
Loss Contingency, Estimate of Possible Loss		$ 6,700,000
Loss Contingency, Range of Possible Loss, Maximum		9,100,000
Loss Contingency, Range of Possible Loss, Portion Not Accrued		2,400,000
Allocated Share of Liabilities Not Readily Associated with the Business - TriMas		42.01%
Allocated Share of Liabilities Not Readily Associated with the Business - Metaldyne		57.99%
Indemnification Deductible		$ 50,000

Employee Benefit Plans Defined Benefit Plan Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year
Pension and Other Postretirement Benefit Plans, Amounts that Will be Amortized from Accumulated Other Comprehensive Income (Loss) in Next Fiscal Year	$ 1.5
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Estimated Future Employer Contributions
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	3.5
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan, Estimated Future Employer Contributions
Defined Benefit Plan, Estimated Future Employer Contributions in Next Fiscal Year	$ 0.1
Defined Benefit Plan, Plan Participants, Pre-65 [Member]
Defined Benefit Plan, Assumed Health Care Cost Trend Rates
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year	8.00%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate	5.00%
Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate	2022
Defined Benefit Plan, Plan Participants, Post-65 [Member]
Defined Benefit Plan, Assumed Health Care Cost Trend Rates
Defined Benefit Plan, Health Care Cost Trend Rate Assumed for Next Fiscal Year	7.50%
Defined Benefit Plan, Ultimate Health Care Cost Trend Rate	5.00%
Defined Benefit Plan, Year that Rate Reaches Ultimate Trend Rate	2020

Employee Benefit Plans - Net Periodic Pension and Postretirement Benefit Costs (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service costs	$ 760	$ 680	$ 600
Interest costs	1,760	1,610	1,620
Expected return on plan assets	(2,070)	(1,810)	(1,720)
Amortization of prior service cost	0	0	0
Settlements and curtailments gain	0	0	190
Amortization of net (gain)/loss	1,120	1,280	1,070
Net periodic benefit cost (income)	1,570	1,760	1,760
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service costs	0	0	0
Interest costs	30	40	50
Expected return on plan assets	0	0	0
Amortization of prior service cost	0	0	(200)
Settlements and curtailments gain	0	0	(1,490)
Amortization of net (gain)/loss	(90)	(80)	(80)
Net periodic benefit cost (income)	$ (60)	$ (40)	$ (1,720)

Employee Benefit Plans Assumptions Used for. U.S Defined Benefit Plans Table (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate for obligations	4.17%	5.01%	4.24%
Discount rate for benefit costs	5.01%	4.24%	4.78%
Expected long-term rate of return on plan assets	7.50%	7.50%	7.75%
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate for obligations	3.89%	4.48%	3.69%
Discount rate for benefit costs	4.48%	3.69%	4.54%

Employee Benefit Plans Assumptions Used for Non-U.S. Defined Pension Plans Table (Details) (Foreign Pension Plans, Defined Benefit [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Discount rate for obligations	3.70%	4.50%	4.50%
Discount rate for benefit costs	4.50%	4.50%	4.80%
Rate of increase in compensation levels	3.80%	4.10%	3.70%
Expected long-term rate of return on plan assets	5.60%	5.40%	5.50%

Employee Benefit Plans Weighted Average Asset Allocation by Pension Plan (Details)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
Defined Benefit Plan, Target Plan Asset Allocations	100.00%
United States Pension Plans of US Entity, Defined Benefit [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	63.00%	61.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	50.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	70.00%
United States Pension Plans of US Entity, Defined Benefit [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	35.00%	36.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Minimum	30.00%
Defined Benefit Plan, Target Plan Asset Allocations Range Maximum	50.00%
United States Pension Plans of US Entity, Defined Benefit [Member] \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	2.00%	3.00%
Defined Benefit Plan, Target Plan Asset Allocations	0.00%
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	100.00%	100.00%
Defined Benefit Plan, Target Plan Asset Allocations	100.00%
Foreign Pension Plans, Defined Benefit [Member] \| Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	52.00%	57.00%
Defined Benefit Plan, Target Plan Asset Allocations	55.00%
Foreign Pension Plans, Defined Benefit [Member] \| Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	48.00%	42.00%
Defined Benefit Plan, Target Plan Asset Allocations	45.00%
Foreign Pension Plans, Defined Benefit [Member] \| Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Actual Plan Asset Allocations	0.00%	1.00%
Defined Benefit Plan, Target Plan Asset Allocations	0.00%

Employee Benefit Plans Pension Plan Assets Fair Value Hierarchy Table (Details) (Pension Plans, Defined Benefit [Member], USD $)
In Thousands, unless otherwise specified

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

$ 32,610

$ 31,780

$ 27,860

Fair Value, Inputs, Level 1 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

130

Fair Value, Inputs, Level 2 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

32,480

Fair Value, Inputs, Level 3 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

Equity Securities [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

18,220

Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

18,220

Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

Fixed Income Funds [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

8,610

Fixed Income Funds [Member] | Fair Value, Inputs, Level 1 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

Fixed Income Funds [Member] | Fair Value, Inputs, Level 2 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

8,610

Fixed Income Funds [Member] | Fair Value, Inputs, Level 3 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

US Treasury Securities [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

2,080

US Treasury Securities [Member] | Fair Value, Inputs, Level 1 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

US Treasury Securities [Member] | Fair Value, Inputs, Level 2 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

2,080

US Treasury Securities [Member] | Fair Value, Inputs, Level 3 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

US Government Agencies Debt Securities [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

US Government Agencies Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

Corporate Debt Securities [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

1,890

Corporate Debt Securities [Member] | Fair Value, Inputs, Level 1 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

Corporate Debt Securities [Member] | Fair Value, Inputs, Level 2 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

1,890

Corporate Debt Securities [Member] | Fair Value, Inputs, Level 3 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

Asset-backed Securities [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

1,270

^[1]

Asset-backed Securities [Member] | Fair Value, Inputs, Level 1 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

^[1]

Asset-backed Securities [Member] | Fair Value, Inputs, Level 2 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

1,270

^[1]

Asset-backed Securities [Member] | Fair Value, Inputs, Level 3 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

^[1]

Cash and Cash Equivalents [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

510

Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 1 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

130

Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 2 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

380

Cash and Cash Equivalents [Member] | Fair Value, Inputs, Level 3 [Member]

Defined Benefit Plan Disclosure [Line Items]

Fair Value of Plan Assets

$ 0

[1]	Comprised of mortgage-backed, asset backed securities

Employee Benefit Plans Future Benefit Payments Table (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Future Benefit Payments, Next Twelve Months	$ 1,720
Expected Future Benefit Payments, Year Two	1,770
Expected Future Benefit Payments, Year Three	1,820
Expected Future Benefit Payments, Year Four	1,940
Expected Future Benefit Payments, Year Five	2,010
Expected Future Benefit Payments, Five Fiscal Years Thereafter	10,890
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected Future Benefit Payments, Next Twelve Months	70
Expected Future Benefit Payments, Year Two	70
Expected Future Benefit Payments, Year Three	60
Expected Future Benefit Payments, Year Four	50
Expected Future Benefit Payments, Year Five	50
Expected Future Benefit Payments, Five Fiscal Years Thereafter	$ 200

Employee Benefit Plans Effect of One Percentage Point Change in Assumed Health Care Cost Trend Table (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Defined Benefit Plan, Effect of One-Percentage Point Change in Assumed Health Care Cost Trend Rates
Effect of One Percentage Point Increase on Service and Interest Cost Components	$ 0
Effect of One Percentage Point Decrease on Service and Interest Cost Components	0
Effect of One Percentage Point Increase on Accumulated Postretirement Benefit Obligation	50
Effect of One Percentage Point Decrease on Accumulated Postretirement Benefit Obligation	$ (40)

Employee Benefit Plans Defined Benefit Plan Change in Benefit Obligations and Plan Assets Table (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations at December 31	$ (40,630)	$ (20,200)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation	(38,230)	(38,730)
Service costs	(760)	(680)	(600)
Interest costs	(1,760)	(1,610)	(1,620)
Participant contributions	60	60
Actuarial gain (loss)	(6,470)	1,280
Benefit payments	(2,230)	(1,850)
Change in foreign currency	1,320	(280)
Defined Benefit Plan, Benefit Obligation	(43,730)	(38,230)	(38,730)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets	31,780	27,860
Actual return on plan assets	1,830	2,270
Employer contributions	2,340	3,240
Participant contributions	60	60
Benefit payments	(2,230)	(1,850)
Change in foreign currency	(1,170)	200
Fair value of plan assets	32,610	31,780	27,860
Defined Benefit Plan, Funded Status of Plan [Abstract]
Funded Status at December 31	(11,120)	(6,450)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations at December 31	(660)	(810)
Defined Benefit Plan, Change in Benefit Obligation [Roll Forward]
Defined Benefit Plan, Benefit Obligation	(810)	(970)
Service costs	0	0	0
Interest costs	(30)	(40)	(50)
Participant contributions	0	0
Actuarial gain (loss)	100	170
Benefit payments	(80)	(30)
Change in foreign currency	0	0
Defined Benefit Plan, Benefit Obligation	(660)	(810)	(970)
Defined Benefit Plan, Change in Fair Value of Plan Assets [Roll Forward]
Fair value of plan assets	0	0
Actual return on plan assets	0	0
Employer contributions	80	30
Participant contributions	0	0
Benefit payments	(80)	(30)
Change in foreign currency	0	0
Fair value of plan assets	0	0	0
Defined Benefit Plan, Funded Status of Plan [Abstract]
Funded Status at December 31	$ (660)	$ (810)

Employee Benefit Plans Amounts Recognized on Balance Sheet Table (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	$ 790	$ 980
Defined Benefit Plan, Amounts Recognized in Balance Sheet
Current liabilities	(320)	(410)
Noncurrent liabilities	(11,590)	(7,020)
Net liability recognized at December 31	(11,120)	(6,450)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Assets for Plan Benefits, Noncurrent	0	0
Defined Benefit Plan, Amounts Recognized in Balance Sheet
Current liabilities	(70)	(90)
Noncurrent liabilities	(590)	(720)
Net liability recognized at December 31	$ (660)	$ (810)

- Definition

This represents the noncurrent liability for underfunded plans recognized in the balance sheet that is associated with the defined benefit pension plans and other postretirement defined benefit plans.

+ References+ Details

Employee Benefit Plans Amounts Recognized in Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), after Tax
Unrecognized prior service cost	$ 90	$ 110
Unrecognized net loss/(gain)	21,420	16,420
Total accumulated other comprehensive income (loss) recognized at December 31	21,510	16,530
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan, Accumulated Other Comprehensive Income (Loss), after Tax
Unrecognized prior service cost	0	0
Unrecognized net loss/(gain)	(670)	(670)
Total accumulated other comprehensive income (loss) recognized at December 31	$ (670)	$ (670)

- Definition

The total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

+ References+ Details

Employee Benefit Plans Plans with Benefit Obligations in Excess of Assets Table (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations at December 31	$ (40,630)	$ (20,200)
Benefit obligation	(42,910)	(37,430)
Plan assets	31,000	30,000
Benefit obligation in excess of plan assets	(11,910)	(7,430)
Other Postretirement Benefit Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligations at December 31	(660)	(810)
Benefit obligation	(660)	(810)
Plan assets	0	0
Benefit obligation in excess of plan assets	$ (660)	$ (810)

Employee Benefit Plans Effect of Change in Discount Rate and Expected Return on Plan Assets Table (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Pension Plans, Defined Benefit [Member]
Effect of Twenty-Five Basis Point Change in Discount Rate
Effect of Twenty-Five Basis Point Increase in Discount Rate on Benefit Obligation	$ (1,580)
Effect of Twenty-Five Basis Point Decrease in Discount Rate on Benefit Obligation	1,650
Effect of Twenty-Five Basis Point Increase in Discount Rate on Expense	(140)
Effect of Twenty-Five Basis Point Decrease in Discount Rate on Expense	150
Effect of Fifty Basis Point Change in Expected Return on Plan Assets
Effect of Fifty Basis Point Increase in Expected Return on Plan Assets on Expense	(170)
Effect of Fifty Basis Point Decrease in Expected Return on Plan Assets on Expense	170
Other Postretirement Benefit Plans, Defined Benefit [Member]
Effect of Twenty-Five Basis Point Change in Discount Rate
Effect of Twenty-Five Basis Point Increase in Discount Rate on Benefit Obligation	(20)
Effect of Twenty-Five Basis Point Decrease in Discount Rate on Benefit Obligation	20
Effect of Twenty-Five Basis Point Increase in Discount Rate on Expense	0
Effect of Twenty-Five Basis Point Decrease in Discount Rate on Expense	$ 0

Equity Awards - Equity Awards Narrative (Details)	Dec. 31, 2014 number	Mar. 31, 2014 number
Director Retainer [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Approved for Issuance	100,000
Plan 3 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of performance metrics in restricted shares award type plan	2	2
2011 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fungible Ratio	1.75
Shares Approved for Issuance	2,850,000
2006 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fungible Ratio	2
Shares Approved for Issuance	2,435,877
2002 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fungible Ratio	1
Shares Approved for Issuance	1,786,123
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fungible Ratio	1

Equity Awards - Stock Options Narrative (Details) (Stock Options [Member], USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Options Granted	0	0	0
Exercisable/Vested stock options	251,667
Stock Options Vested	800
Fair value of exercisable/vested stock options	$ 0.1	$ 0.1	$ 0.4
Stock-based compensation expense	$ 0	$ 0	$ 0

Equity Awards - Stock Option Activity Table (Details) (USD $)	12 Months Ended
	Dec. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of Options Outstanding, beginning balance	342,448
Number of Options Exercised	(90,781)
Number of Options Cancelled	0
Number of Options Expired	0
Number of Options Outstanding, ending balance	251,667
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Options Outstanding, Weighted Average Price, beginning	$ 9.92
Options Exercised, Weighted Average Price	$ 19.72
Options Cancelled, Weighted Average Price	$ 0.00
Options Expired, Weighted Average Price	$ 0.00
Options Outstanding, Weighted Average Price, ending	$ 6.39
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures
Options Average Remaining Contractual Life (Years)	3 years 6 months
Options Aggregate Intrinsic Value	$ 6,266,389

Equity Awards - Restricted Shares Narrative (Details) (USD $)	12 Months Ended											3 Months Ended				12 Months Ended	3 Months Ended	12 Months Ended		3 Months Ended				12 Months Ended		3 Months Ended	12 Months Ended												3 Months Ended	12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended				12 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2014 Restricted Shares [Member]	Dec. 31, 2013 Restricted Shares [Member]	Dec. 31, 2012 Restricted Shares [Member]	Dec. 31, 2014 Restricted Shares [Member] Non-employee independent director [Member]	Dec. 31, 2013 Restricted Shares [Member] Non-employee independent director [Member]	Dec. 31, 2012 Restricted Shares [Member] Non-employee independent director [Member]	Dec. 31, 2014 Plan 2 [Member] Service-based restriced shares [Member]	Dec. 31, 2013 Plan 2 [Member] Service-based restriced shares [Member]	Dec. 31, 2012 Plan 2 [Member] Service-based restriced shares [Member]	Dec. 31, 2014 Plan 3 [Member] number	Mar. 31, 2014 Plan 3 [Member] number	Mar. 31, 2014 Plan 3 [Member] Restricted Shares [Member]	Mar. 31, 2013 Plan 3 [Member] Restricted Shares [Member]	Mar. 31, 2012 Plan 3 [Member] Restricted Shares [Member]	Mar. 31, 2014 Plan 3 [Member] Service-based restriced shares [Member]	Dec. 31, 2014 Plan 3 [Member] Service-based restriced shares [Member]	Mar. 31, 2014 Plan 3 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 Plan 3 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 Plan 4 [Member] number	Mar. 31, 2012 Plan 4 [Member] Performance-based restriced shares [Member]	Mar. 31, 2014 Plan 5 [Member] Service-based restriced shares [Member] Non-employee independent director [Member]	Mar. 31, 2013 Plan 5 [Member] Service-based restriced shares [Member] Non-employee independent director [Member]	Mar. 31, 2012 Plan 5 [Member] Service-based restriced shares [Member] Non-employee independent director [Member]	Dec. 31, 2014 Plan 5 [Member] Service-based restriced shares [Member] Non-employee independent director [Member]	Dec. 31, 2014 Plan 6 [Member] number	Mar. 31, 2011 Plan 6 [Member] Restricted Shares [Member]	Dec. 31, 2013 Plan 6 [Member] Performance-based restriced shares [Member]	Dec. 31, 2013 Plan 6 [Member] Market-based restricted shares [Member]	Dec. 31, 2014 Plan 7 [Member] Service-based restriced shares [Member]	Dec. 31, 2014 Plan 1 [Member] Service-based restriced shares [Member]	Dec. 31, 2013 Plan 1 [Member] Service-based restriced shares [Member]	Dec. 31, 2012 Plan 1 [Member] Service-based restriced shares [Member]	Dec. 31, 2014 Minimum [Member] Plan 2 [Member] Service-based restriced shares [Member]	Dec. 31, 2014 Minimum [Member] Plan 4 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 Maximum [Member] Plan 4 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 3 year cash flow metric [Member] Plan 3 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 3 year cash flow metric [Member] Minimum [Member] Plan 3 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 3 year cash flow metric [Member] Maximum [Member] Plan 3 [Member] Performance-based restriced shares [Member]	Mar. 31, 2014 3 year EPS CAGR metric [Member] Plan 3 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 3 year EPS CAGR metric [Member] Plan 3 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 3 year EPS CAGR metric [Member] Minimum [Member] Plan 3 [Member] Performance-based restriced shares [Member]	Mar. 31, 2014 3 year EPS CAGR metric [Member] Maximum [Member] Plan 3 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 3 year EPS CAGR metric [Member] Maximum [Member] Plan 3 [Member] Performance-based restriced shares [Member]	Mar. 31, 2014 3 year ROIC metric [Member] [Member] Plan 3 [Member] Performance-based restriced shares [Member]	Mar. 31, 2014 3 year ROIC metric [Member] [Member] Minimum [Member] Plan 3 [Member] Performance-based restriced shares [Member]	Mar. 31, 2014 3 year ROIC metric [Member] [Member] Maximum [Member] Plan 3 [Member] Performance-based restriced shares [Member]	Mar. 31, 2013 2012 EPS growth metric [Member] Plan 4 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 2012 EPS growth metric [Member] Plan 4 [Member] Performance-based restriced shares [Member]	Mar. 31, 2014 2012 & 2013 EPS CAGR metric [Member] Plan 4 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 2012 & 2013 EPS CAGR metric [Member] Plan 4 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 4 consecutive quarters cumulative EPS 1 [Member] Plan 6 [Member] Performance-based restriced shares [Member]	Dec. 31, 2013 4 consecutive quarters cumulative EPS 1 [Member] Plan 6 [Member] Performance-based restriced shares [Member]	Dec. 31, 2014 30 consecutive trading days stock price 1 [Member] Plan 6 [Member] Market-based restricted shares [Member]	Dec. 31, 2013 30 consecutive trading days stock price 1 [Member] Plan 6 [Member] Market-based restricted shares [Member]	Dec. 31, 2014 30 consecutive trading days stock price 2 [Member] Plan 6 [Member] Market-based restricted shares [Member]	Dec. 31, 2013 30 consecutive trading days stock price 2 [Member] Plan 6 [Member] Market-based restricted shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of Unvested Restricted Shares Granted	356,413						40,837	41,480	60,665			243,124	238,808	206,064		103,032		103,032		166,530	20,832	17,240	16,440			81,680	40,840	40,840	2,200	23,226	29,498	19,532															72,576		16,054					20,420		20,420
Award requisite service period							1 year								3 years	3 years								1 year					1 year	3 years
ICP, Threshold target for granting stock awards																																	$ 20,000
Cash value of incentive plan							80.00%
Restriced shares value of incentive plan							20.00%
Award Vesting Period																	3 years	3 years
Award percentage earned based on metric over the performance period																																				25.00%			75.00%	75.00%				25.00%				60.00%		40.00%	50.00%		50.00%		50.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award percentage attained																																																175.00%		125.00%
Share-based Compensation Arrangement by Share-based Payment Award, Number of vesting metrics in restricted shares award type plan																									2
Number of performance metrics in restricted shares award type plan										2	2								2
Amount of shares earned % of target award																																		30.00%	250.00%		30.00%	200.00%			30.00%	250.00%	250.00%		30.00%	200.00%
Restricted shares issued related to director fee deferrals				10,140	5,215	7,979
Cumulative Earnings Per Share																																																				2.00
Closing Stock Price																																																						30		35
Risk-Free Interest Rate																												1.00%
Expected Volatility																												70.00%
Unrecognized Compensation Cost	6,900,000
Period for Recognition of Share-based Compensation Cost Not yet Recognized	1 year 11 months
Restricted shares-based compensation expense	$ 7,400,000	$ 9,200,000	$ 9,300,000

Equity Awards - Restricted Shares Activity Table (Details) (Restricted Shares [Member], USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Number of Unvested Restricted Shares Granted	356,413
Number of Unvested Restricted Shares Vested	(262,714)
Number of Unvested Restricted Shares Cancelled	(22,640)
Number of Unvested Restricted Shares Outstanding, ending balance	725,459	654,400
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Unvested Restricted Shares Outstanding, Weighted Average Grant Date Fair Value, beginning	$ 26.00
Unvested Restricted Shares Granted, Weighted Average Grant Date Fair Value	$ 33.17
Unvested Restricted Shares Vested, Weighted Average Grant Date Fair Value	$ 25.53
Unvested Restricted Shares Cancelled, Weighted Average Grant Date Fair Value	$ 29.51
Unvested Restricted Shares Outstanding, Weighted Average Grant Date Fair Value, ending	$ 29.59
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures
Restricted Shares Average Remaining Contractual Life (Years)	0 years 11 months
Restricted Shares Aggregate Intrinsic Value	$ 22,699,612

Other Comprehensive Income (Details) (USD $)

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Accumulated Other Comprehensive Income (Loss) [Line Items]

Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax

$ (13,820,000)

$ (15,770,000)

$ 3,930,000

Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]

Balance, at beginning of year

27,830,000

39,260,000

Net unrealized gains (losses) arising during the period

(20,030,000)

(3,690,000)

Less: Net realized gains reclassified to net income

(2,420,000)

7,740,000

Other Comprehensive Income (Loss), Net of Tax

(17,610,000)

(11,430,000)

(320,000)

Balance, at end of year

10,220,000

27,830,000

39,260,000

Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax

(3,340,000)

1,600,000

(2,570,000)

Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Net of Tax

(450,000)

2,740,000

(1,680,000)

Other Comprehensive (Income) Loss, Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, Tax

300,000

400,000

Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax

300,000

400,000

Defined Benefit Plans

Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]

Balance, at beginning of year

(10,840,000)

(12,440,000)

Net unrealized gains (losses) arising during the period

(4,040,000)

800,000

Less: Net realized gains reclassified to net income

(700,000)

^[1]

(800,000)

^[2]

Balance, at end of year

(14,180,000)

(10,840,000)

Derivative Instruments

Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]

Balance, at beginning of year

1,060,000

(1,680,000)

Net unrealized gains (losses) arising during the period

(900,000)

3,370,000

Less: Net realized gains reclassified to net income

(450,000)

^[1]

630,000

^[2]

Balance, at end of year

610,000

1,060,000

Foreign Currency Translation

Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]

Balance, at beginning of year

37,610,000

53,380,000

Net unrealized gains (losses) arising during the period

(15,090,000)

(7,860,000)

Less: Net realized gains reclassified to net income

(1,270,000)

7,910,000

Balance, at end of year

$ 23,790,000

$ 37,610,000

[1]	Defined benefit plans, net of income tax expense of $0.3 million. See Note 16, "Employee Benefit Plans," for additional details. Derivative instruments, net of income tax expense of $0.3 million. See Note 13, "Derivative Instruments," for further details.
[2]	(a) Defined benefit plans, net of income tax expense of $0.4 million. See Note 16, "Employee Benefit Plans," for additional details. Derivative instruments, net of income tax expense of $0.4 million. See Note 13, "Derivative Instruments," for further details.

Segment Information (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Operating Profit (Loss)	$ 124,550	$ 119,600	$ 128,070
Capital Expenditures	34,450	39,490	46,120
Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	1,499,080	1,388,600	1,267,510
Operating Profit (Loss)	124,550	119,600	128,070
Capital Expenditures	34,450	39,490	46,120
Depreciation and Amortization	56,470	50,550	44,840
Packaging [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	337,710	313,220	275,160
Operating Profit (Loss)	77,850	83,770	57,550
Capital Expenditures	13,730	11,010	15,470
Depreciation and Amortization	20,410	18,960	17,970
Energy [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	206,720	205,580	190,210
Operating Profit (Loss)	(6,660)	8,620	17,810
Capital Expenditures	2,690	5,250	5,210
Depreciation and Amortization	4,600	3,820	3,600
Aerospace [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	121,510	95,530	73,180
Operating Profit (Loss)	17,830	22,830	21,020
Capital Expenditures	4,430	4,810	3,210
Depreciation and Amortization	7,630	3,790	2,630
Engineered Components [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	221,360	185,370	200,000
Operating Profit (Loss)	34,080	19,450	27,990
Capital Expenditures	1,690	2,190	4,090
Depreciation and Amortization	4,460	4,270	3,860
Cequent Asia Pacific Europe Africa [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	165,110	151,620	128,560
Operating Profit (Loss)	7,860	13,920	12,300
Capital Expenditures	6,910	9,650	8,290
Depreciation and Amortization	7,520	5,770	3,840
Cequent Americas [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Net Sales	446,670	437,280	400,400
Operating Profit (Loss)	31,090	8,850	27,420
Capital Expenditures	4,530	5,610	9,670
Depreciation and Amortization	11,410	13,680	12,780
Corporate [Member] \| Continuing Operations [Member]
Segment Reporting Information [Line Items]
Operating Profit (Loss)	(37,500)	(37,840)	(36,020)
Capital Expenditures	470	970	180
Depreciation and Amortization	$ 440	$ 260	$ 160

Segment Information Operating Net Assets by Segment (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	$ 1,351,830	$ 1,039,270	$ 883,760
Current Liabilities	309,920	261,510	247,200
Consolidated Assets	1,661,750	1,300,780	1,130,960
Continuing Operations [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	1,351,830	1,039,270	883,760
Continuing Operations [Member] \| Packaging [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	398,530	377,480	376,040
Continuing Operations [Member] \| Energy [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	170,430	180,410	158,710
Continuing Operations [Member] \| Aerospace [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	498,560	150,750	80,620
Continuing Operations [Member] \| Engineered Components [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	65,910	73,780	68,870
Continuing Operations [Member] \| Cequent Asia Pacific Europe Africa [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	75,290	81,120	51,790
Continuing Operations [Member] \| Cequent Americas [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	151,760	164,590	145,360
Continuing Operations [Member] \| Corporate [Member]
Segment Reporting, Asset Reconciling Item [Line Items]
Operating Net Assets	$ (8,650)	$ 11,140	$ 2,370

Segment Information Revenues and Operating Net Assets by Geographical Areas (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues from External Customers and Long-Lived Assets [Line Items]
Operating Net Assets	$ 1,351,830	$ 1,039,270	$ 883,760
Continuing Operations [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	1,499,080	1,388,600	1,267,510
Operating Net Assets	1,351,830	1,039,270	883,760
Continuing Operations [Member] \| Europe [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	120,690	97,500	62,400
Operating Net Assets	97,670	136,490	102,250
Continuing Operations [Member] \| AUSTRALIA
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	88,820	97,580	100,620
Operating Net Assets	38,700	27,080	32,400
Continuing Operations [Member] \| Asia [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	46,810	44,870	32,230
Operating Net Assets	92,470	59,120	38,130
Continuing Operations [Member] \| Africa [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	8,800	3,310	4,180
Operating Net Assets	4,290	4,770	3,090
Continuing Operations [Member] \| Other Americas [Member]
Revenues from External Customers and Long-Lived Assets [Line Items]
Net Sales	45,950	46,210	34,090
Operating Net Assets	$ 53,780	$ 83,080	$ 68,660

Income Taxes Income Tax by Jurisdiction (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest
Income (Loss) from Continuing Operations before Income Taxes, Domestic	$ 85,000	$ 49,480	$ 12,150
Income (Loss) from Continuing Operations before Income Taxes, Foreign	14,600	47,610	30,340
Income (Loss) from Continuing Operations before Income Taxes, Extraordinary Items, Noncontrolling Interest	99,600	97,090	42,490
Current Federal Tax Expense (Benefit)	31,150	15,850	8,340
Current State and Local Tax Expense (Benefit)	3,450	1,440	1,860
Current Foreign Tax Expense (Benefit)	6,890	9,650	4,190
Current Income Tax Expense (Benefit)	41,490	26,940	14,390
Deferred Federal Income Tax Expense (Benefit)	(9,170)	(4,490)	(6,200)
Deferred State and Local Income Tax Expense (Benefit)	350	(1,020)	(750)
Deferred Foreign Income Tax Expense (Benefit)	200	(3,290)	(1,380)
Deferred Income Tax Expense (Benefit)	(8,620)	(8,800)	(8,330)
Income Tax Expense (Benefit), Continuing Operations	$ 32,870	$ 18,140	$ 6,060

Income Taxes Components of Deferred Taxes (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Components of Deferred Tax Assets
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	$ 1,710	$ 1,240
Deferred Tax Assets, Inventory	9,680	7,840
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Other	45,750	40,410
Deferred Tax Assets, Operating Loss and Credit Carryforwards	17,530	10,010
Deferred Tax Assets, Gross	74,670	59,500
Deferred Tax Assets, Valuation Allowance	(9,820)	(6,530)
Deferred Tax Assets, Net of Valuation Allowance	64,850	52,970
Components of Deferred Tax Liabilities
Deferred Tax Liabilities, Property, Plant and Equipment	(19,640)	(20,420)
Deferred Tax Liabilities, Goodwill and Intangible Assets	(64,400)	(66,440)
Deferred Tax Liabilities, Other	(5,230)	(6,310)
Deferred Tax Liabilities, Gross	(89,270)	(93,170)
Deferred Tax Liabilities, Net	$ (24,420)	$ (40,200)

Income Taxes Income Tax Expense Reconciliation (Details) (USD $)
In Thousands, unless otherwise specified

12 Months Ended

Dec. 31, 2014

Dec. 31, 2013

Dec. 31, 2012

Income Tax Expense (Benefit), Continuing Operations, Income Tax Reconciliation

Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate

35.00%

Income Tax Reconciliation, Income Tax Expense (Benefit), at Federal Statutory Income Tax Rate

$ 34,860

$ 33,990

$ 14,880

Income Tax Reconciliation, State and Local Income Taxes

2,750

250

730

Income Tax Reconciliation, Foreign Income Tax Rate Differential

(3,910)

(8,550)

(4,920)

Income Tax Reconciliation, Tax Contingencies

(1,960)

(1,630)

(1,320)

Income Tax Reconciliation, Tax Holidays

420

^[1]

1,980

^[1]

1,160

^[1]

Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount

(5,460)

Income Tax Reconciliation, Nondeductible Expense, Restructuring Charges (Benefits)

2,230

(2,400)

Income Tax Reconciliation, Noncontrolling Interest Income (Expense)

(280)

(1,410)

(790)

Income Tax Reconciliation, Change in Deferred Tax Assets Valuation Allowance

3,310

1,980

1,600

Income Tax Reconciliation, Other Adjustments

(1,480)

(1,280)

(560)

Income Tax Expense (Benefit), Continuing Operations

$ 32,870

$ 18,140

$ 6,060

[1]	(a) Tax holiday related to Thailand which expires on December 31, 2015.

Income Taxes Operating Loss Carryforwards Narrative (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 33.6
Foreign Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards	$ 48.6
Minimum [Member] \| State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date	Jan. 01, 2024
Maximum [Member] \| State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Operating Loss Carryforwards, Expiration Date	Dec. 31, 2027

Income Taxes Narrative (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Undistributed Earnings of Foreign Subsidiaries	$ 219.4

- Definition

Amount of undistributed earnings of foreign subsidiaries intended to be permanently reinvested outside the country of domicile.

+ References+ Details

Income Taxes Unrecognized Tax Benefits Narrative (Details) (USD $)				12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014 Minimum [Member]	Dec. 31, 2014 Maximum [Member]	Dec. 31, 2014 Foreign Tax Authority [Member] number
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits	$ 27,200,000	$ 31,570,000	$ 21,730,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	21,200,000	25,700,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	$ 2,200,000	$ 1,800,000
Open Tax Year				2013	2002
Income Tax Examinations, Number						2

Income Taxes Unrecognized Tax Benefits Rollforward (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits, Beginning	$ 31,570	$ 21,730
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	280	1,300
Unrecognized Tax Benefits, Increases Resulting from Prior Period Tax Positions	270	15,340
Unrecognized Tax Benefits, Decreases Resulting from Prior Period Tax Positions	(2,050)	(4,310)
Unrecognized Tax Benefits, Decreases Resulting from Settlements with Taxing Authorities	0	0
Unrecognized Tax Benefits, Reductions Resulting from Lapse of Applicable Statute of Limitations	(2,870)	(2,490)
Unrecognized Tax Benefits, Ending	$ 27,200	$ 31,570

Summary Quarterly Financial Data (Details) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Net sales	$ 350,570	$ 380,120	$ 403,000	$ 365,390	$ 320,190	$ 354,910	$ 377,750	$ 335,750	$ 1,499,080	$ 1,388,600	$ 1,267,510
Gross Profit	81,530	98,050	109,420	95,940	70,770	94,110	103,250	82,930	384,940	351,060	342,420
Income (Loss) from Continuing Operations, Including Portion Attributable to Noncontrolling Interest	2,680	18,390	26,430	19,230	7,440	30,250	27,290	13,970	66,730	78,950	36,430
Income from discontinued operations, net of income taxes	(1,210)	3,840	(230)	150	840	(300)	510	70	2,550	1,120	(140)
Net income (loss)	1,470	22,230	26,200	19,380	8,280	29,950	27,800	14,040	69,280	80,070	36,290
Net Income (Loss) Attributable to Redeemable Noncontrolling Interest	0	0	0	810	1,430	1,320	910	860	810	4,520	2,410
Net income (loss) attributable to TriMas Corporation	$ 1,470	$ 22,230	$ 26,200	$ 18,570	$ 6,850	$ 28,630	$ 26,890	$ 13,180	$ 68,470	$ 75,550	$ 33,880
Basic earnings per share attributable to TriMas Corporation:
Continuing operations	$ 0.06	$ 0.41	$ 0.59	$ 0.41	$ 0.13	$ 0.72	$ 0.67	$ 0.34	$ 1.47	$ 1.82	$ 0.90
Discontinued operations	$ (0.03)	$ 0.08	$ (0.01)	$ 0.00	$ 0.02	$ (0.01)	$ 0.01	$ 0.00	$ 0.06	$ 0.03	$ 0.00
Net income (loss) per share	$ 0.03	$ 0.49	$ 0.58	$ 0.41	$ 0.15	$ 0.71	$ 0.68	$ 0.34	$ 1.53	$ 1.85	$ 0.90
Weighted average shares—basic	44,938,675	44,919,340	44,901,090	44,768,594	44,698,948	40,345,828	39,425,471	39,234,780	44,881,925	40,926,257	37,520,935
Diluted earnings per share attributable to TriMas Corporation:
Continuing operations	$ 0.06	$ 0.41	$ 0.59	$ 0.41	$ 0.13	$ 0.71	$ 0.66	$ 0.33	$ 1.46	$ 1.80	$ 0.89
Discontinued operations	$ (0.03)	$ 0.08	$ (0.01)	$ 0.00	$ 0.02	$ (0.01)	$ 0.01	$ 0.00	$ 0.05	$ 0.03	$ 0.00
Net income (loss) per share	$ 0.03	$ 0.49	$ 0.58	$ 0.41	$ 0.15	$ 0.70	$ 0.67	$ 0.33	$ 1.51	$ 1.83	$ 0.89
Weighted average shares—diluted	45,384,460	45,276,199	45,230,862	45,186,114	45,159,205	40,746,503	39,886,593	39,790,524	45,269,409	41,395,706	37,949,021

Equity Offering	12 Months Ended
Equity Offering	Dec. 31, 2014
Equity [Abstract]
Equity Offering	Equity Offering In September 2013, the Company issued 5,175,000 shares of its common stock via a public offering at a price of $35.40 per share. Net proceeds from the offering, after deducting underwriting discounts, commissions and offering expenses of $8.5 million, totaled approximately $174.7 million. The Company used the net offering proceeds for general corporate purposes, including retirement of debt in connection with the Company's October 2013 refinancing, acquisitions, capital expenditures and working capital requirements. In May 2012, the Company issued 4,000,000 shares of its common stock via a public offering at a price of $20.75 per share. Net proceeds from the offering, after deducting underwriting discounts, commissions and offering expenses of $4.0 million, totaled approximately $79.0 million. Approximately $54.9 million of net proceeds were utilized to partially redeem $50.0 million aggregate principal of the Company's former 9 ¾% senior secured notes. The remaining proceeds were used for general corporate purposes, including acquisitions, capital expenditures and working capital requirements.

Summary of Significant Accounting Policies - Self-insurance (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014
Minimum [Member] \| General Liability [Member]
Self-insurance coverage [Line Items]
Maximum Retention	$ 0.3
Maximum [Member] \| Workers' Compensation [Member]
Self-insurance coverage [Line Items]
Maximum Retention	0.5
Maximum [Member] \| General Liability [Member]
Self-insurance coverage [Line Items]
Maximum Retention	2.0
Maximum [Member] \| Group Medical Plan [Member]
Self-insurance coverage [Line Items]
Stop Loss Limit	$ 0.3

Summary of Significant Accounting Policies - Advertising and Sales Promotion Costs (Details) (Selling, General and Administrative Expenses [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Selling, General and Administrative Expenses [Member]
Advertising Costs [Line Items]
Advertising Costs	$ 9.8	$ 8.9	$ 7.9

Summary of Significant Accounting Policies - Foreign Currency Translation (Details) (Other Expense, Net [Member], USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Other Expense, Net [Member]
Foreign Currency Translation [Line Items]
Net Foreign Currency Transaction Gains (Losses)	$ (1.6)	$ (1.1)	$ (1.1)

Summary of Significant Accounting Policies - Receivables (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Accounting Policies [Abstract]
Allowance for Doubtful Accounts	$ 5.4	$ 3.6

Summary of Significant Accounting Policies - Fair Value of Financial Instruments (Details) (Fair Value, Inputs, Level 2 [Member])	Dec. 31, 2014 Rate	Dec. 31, 2013 Rate
term loan A facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value, % of par value	99.50%	99.90%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Long-term Debt, Fair Value, % of par value	99.20%	99.60%