v2.4.0.6
Document and Entity Information Document
6 Months Ended
Jun. 30, 2011
Entity Information [Line Items]  
Entity Registrant Name TRIMAS CORP
Entity Central Index Key 0000842633
Current Fiscal Year End Date --12-31
Entity Filer Category Accelerated Filer
Document Type 10-Q
Document Period End Date Jun. 30, 2011
Document Fiscal Year Focus 2011
Document Fiscal Period Focus Q2
Amendment Flag false
Entity Common Stock, Shares Outstanding 34,573,877