CONSOLIDATED STATEMENTS OF NET INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Statement [Abstract]
Sales	$ 3,618,126	$ 3,472,891	$ 3,342,804
Cost of products sold	2,946,828	2,808,049	2,755,691
Gross profit	671,298	664,842	587,113
Selling, administration & engineering expenses	349,496	359,782	329,922
Amortization of intangibles	14,056	13,566	13,892
Impairment charges	14,763	1,273	21,611
Restructuring charges	35,137	46,031	53,844
Other operating loss (profit)	0	155	(8,033)
Operating profit	257,846	244,035	175,877
Interest expense, net of interest income	(42,112)	(41,389)	(38,331)
Equity in earnings of affiliates	5,519	7,877	5,683
Loss on refinancing and extinguishment of debt	(1,020)	(5,104)	0
Other (expense) income, net	(7,133)	(10,659)	9,759
Income before income taxes	213,100	194,760	152,988
Income tax expense	74,527	54,321	41,218
Net income	138,573	140,439	111,770
Net (income) loss attributable to noncontrolling interests	(3,270)	(1,451)	110
Net income attributable to Cooper-Standard Holdings Inc.	$ 135,303	$ 138,988	$ 111,880
Earnings per share
Basic (in dollars per share)	$ 7.61	$ 7.96	$ 6.50
Diluted (in dollars per share)	$ 7.21	$ 7.42	$ 6.08