CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - 3 months ended Mar. 31, 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
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		151,288
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures		$ 0
Share-based compensation, net	(4,787)		(73)	(4,714)		(4,787)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	(2,370)		(2,682)			(2,682)	312
Net income	57,416			56,792		56,792	624
Other Comprehensive Income, Net of Tax	$ 17,611				16,662	16,662	949
Ending balance (shares) at Mar. 31, 2018	18,065,887	18,065,887
Ending balance at Mar. 31, 2018	$ 922,959	$ 18	510,060	572,084	(189,608)	892,554	$ 30,405
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 0		$ 0	$ 8,639	$ (8,639)	$ 0