Consolidated Statement of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (39,800)	$ (33,400)	$ 69,280
Other comprehensive income
Defined pension and postretirement pension plans	250	1,810	(3,340)
Foreign currency translation	(12,620)	(12,370)	(13,820)
Net changes in unrealized gain (loss) on derivative instruments	(730)	(2,650)	(450)
Other Comprehensive Income (Loss)	(13,100)	(13,210)	(17,610)
Total comprehensive income (loss)	(52,900)	(46,610)	51,670
Net income attributable to noncontrolling interest	0	0	810
Total comprehensive income (loss) attributable to TriMas Corporation	$ (52,900)	$ (46,610)	$ 50,860