Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Net Income	$ 29,950	$ 19,960	$ 71,790	$ 49,380
Other comprehensive income
Amortization of defined benefit plan deferred losses, net of tax	210	(740)	600	(530)
Foreign currency translation	(1,930)	3,040	(12,540)	2,680
Net changes in unrealized gain (loss) on derivative instruments, net of tax	(800)	(80)	3,950	(1,000)
Total other comprehensive income (loss)	(2,520)	2,220	(7,990)	1,150
Total comprehensive income	27,430	22,180	63,800	50,530
Net Income Attributable to Redeemable Noncontrolling Interest	1,320	1,290	3,090	1,560
Total comprehensive income attributable to TriMas Corporation	$ 26,110	$ 20,890	$ 60,710	$ 48,970