Consolidated Statement of Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net Income	$ 27,800	$ 17,170	$ 41,840	$ 29,420
Other comprehensive income
Amortization of defined benefit plan deferred losses, net of tax	190	90	390	210
Foreign currency translation	(8,470)	(4,870)	(10,610)	(360)
Net changes in unrealized gain (loss) on derivative instruments, net of tax	4,070	(510)	4,750	(920)
Total other comprehensive income (loss)	(4,210)	(5,290)	(5,470)	(1,070)
Total comprehensive income	23,590	11,880	36,370	28,350
Net Income Attributable to Redeemable Noncontrolling Interest	910	510	1,770	270
Total comprehensive income attributable to TriMas Corporation	$ 22,680	$ 11,370	$ 34,600	$ 28,080