Consolidated Statement of Income Statement (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net sales	$ 378,030	$ 338,430	$ 715,810	$ 636,000
Cost of sales	(274,720)	(242,540)	(529,100)	(461,200)
Gross profit	103,310	95,890	186,710	174,800
Selling, general and administrative expenses	(61,670)	(52,710)	(121,320)	(103,180)
Net gain (loss) on dispositions of property and equipment	0	20	(10)	320
Operating profit	41,640	43,200	65,380	71,940
Other expense, net:
Interest expense	(5,540)	(10,300)	(10,750)	(20,970)
Debt extinguishment costs	0	(6,560)	0	(6,560)
Other income (expense), net	300	(910)	(1,930)	(2,550)
Other expense, net	(5,240)	(17,770)	(12,680)	(30,080)
Income from continuing operations before income tax expense	36,400	25,430	52,700	41,860
Income tax expense	(9,300)	(8,260)	(11,560)	(12,440)
Income from continuing operations	27,100	17,170	41,140	29,420
Income from discontinued operations, net of income taxes	700	0	700	0
Net Income	27,800	17,170	41,840	29,420
Net income attributable to redeemable noncontrolling interests	910	510	1,770	270
Net income attributable to TriMas Corporation	$ 26,890	$ 16,660	$ 40,070	$ 29,150
Basic earnings per share attributable to TriMas Corporation:
Continuing operations	$ 0.66	$ 0.45	$ 1.00	$ 0.81
Discontinued operations	$ 0.02	$ 0.00	$ 0.02	$ 0.00
Net income per share	$ 0.68	$ 0.45	$ 1.02	$ 0.81
Weighted average common shares—basic	39,425,471	37,345,026	39,330,125	35,968,646
Diluted earnings per share attributable to TriMas Corporation:
Continuing operations	$ 0.65	$ 0.44	$ 0.99	$ 0.80
Discontinued operations	$ 0.02	$ 0.00	$ 0.02	$ 0.00
Net income per share	$ 0.67	$ 0.44	$ 1.01	$ 0.80
Weighted average common shares—diluted	39,886,593	37,694,221	39,790,349	36,421,387