CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN EQUITY - 9 months ended Sep. 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)		(327,788)
Repurchase of common stock	(43,525)		(8,088)	(35,437)		(43,525)
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures		187,818
Stock Issued During Period, Value, Share-based Compensation, Net of Forfeitures		$ 0
Share-based compensation, net	2,872		8,304	(5,432)		2,872
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	133,282			130,825		130,825	2,457
Other Comprehensive Income, Net of Tax	$ (34,492)				(32,739)	(32,739)	(1,753)
Ending balance (shares) at Sep. 30, 2018	17,774,629	17,774,629
Ending balance at Sep. 30, 2018	$ 911,155	$ 18	510,349	609,962	(239,009)	881,320	$ 29,835
Cumulative Effect of New Accounting Principle in Period of Adoption	$ 0		$ 0	$ 8,639	$ (8,639)	$ 0

Amount of increase to additional paid-in capital (APIC) from recognition of equity-based compensation.

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