Consolidated Statement of Income Statement (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Net sales	$ 367,740	$ 337,780
Cost of sales	(271,160)	(254,380)
Gross profit	96,580	83,400
Selling, general and administrative expenses	(63,990)	(59,660)
Operating profit	32,590	23,740
Other expense, net:
Interest expense	(3,470)	(5,210)
Other expense, net	(1,020)	(2,230)
Other expense, net	(4,490)	(7,440)
Income before income tax expense	28,100	16,300
Income tax expense	(8,720)	(2,260)
Net Income	19,380	14,040
Net income attributable to redeemable noncontrolling interests	810	860
Net income attributable to TriMas Corporation	$ 18,570	$ 13,180
Basic earnings per share attributable to TriMas Corporation:
Net income per share	$ 0.41	$ 0.34
Weighted average common shares—basic	44,768,594	39,234,780
Diluted earnings per share attributable to TriMas Corporation:
Net income per share	$ 0.41	$ 0.33
Weighted average common shares—diluted	45,186,114	39,790,524