CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Cooper Standard Holdings Inc Equity [Member]	Noncontrolling Interest [Member]
Beginning balance (shares) at Dec. 31, 2017	17,914,599	17,914,599
Beginning balance at Dec. 31, 2017	$ 855,089	$ 18	$ 512,815	$ 511,367	$ (197,631)	$ 826,569	$ 28,520
Repurchase of common stock (shares)		(276,696)
Repurchase of common stock	(43,525)		(13,696)	(29,829)		(43,525)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		181,053
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures		$ 0
Share-based compensation, net	(1,078)		4,246	(5,324)		(1,078)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	(2,370)		(2,682)			(2,682)	312
Noncontrolling Interest, Increase from Business Combination	299						299
Net income	100,618			98,669		98,669	1,949
Other Comprehensive Income, Net of Tax	$ (20,914)				(20,253)	(20,253)	(661)
Ending balance (shares) at Jun. 30, 2018	17,818,956	17,818,956
Ending balance at Jun. 30, 2018	$ 888,119	$ 18	500,683	583,522	(226,523)	857,700	$ 30,419
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 0		$ 0	$ 8,639	$ (8,639)	$ 0