CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY - USD ($) $ in Thousands	Total	Redeemable Noncontrolling Interests	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated other comprehensive loss [Member]	Cooper Standard Holdings Inc Equity Deficit [Member]	Noncontrolling Interest [Member]
Beginning Balance at Dec. 31, 2014	$ 548,714	$ 3,981	$ 17	$ 492,959	$ 195,233	$ (139,243)	$ 548,966	$ (252)
Beginning Balance (in shares) at Dec. 31, 2014			17,039,328
Shares issued under stock option plans (in shares)			20,960
Shares issued under stock option plans	(289)			(289)			(289)
Stock Issued During Period, Shares, Conversion of Convertible Securities			344,159
Adjustments to Additional Paid in Capital, Warrant Issued	9,277			9,277			9,277
Share-based compensation, net (in shares)			54,498
Share-based compensation, net	8,235			8,635	(400)		8,235
Excess tax benefit on stock options	320			320			320
Acquisition	11,836							11,836
Purchase of noncontrolling interest	2,754	(3,936)		2,862		(300)	2,562	192
Net income (loss)	111,770	(45)			111,880		111,880	(65)
Equity Profit Loss	111,815
Other Comprehensive Income (Loss), Net of Tax	(77,863)					(77,522)	(77,522)	(341)
Ending Balance at Dec. 31, 2015	614,799	0	$ 17	513,764	306,713	(217,065)	603,429	11,370
Ending Balance (in shares) at Dec. 31, 2015			17,458,945
Stock Issued During Period, Shares, Conversion of Convertible Securities			332,873
Adjustments to Additional Paid in Capital, Warrant Issued	2,810			2,810			2,810
Share-based compensation, net (in shares)			248,793
Share-based compensation, net	1,904			5,830	(3,926)		1,904
Acquisition	13,300							13,300
Net income (loss)	140,439				138,988		138,988	1,451
Treasury Stock, Shares, Acquired			(350,000)
Treasury Stock, Value, Acquired, Cost Method	23,800			8,470	15,330		23,800
Dividends paid to noncontrolling interests	580							580
Other Comprehensive Income (Loss), Net of Tax	(26,608)					(25,498)	(25,498)	(1,110)
Ending Balance at Dec. 31, 2016	$ 721,791	0	$ 17	513,934	425,972	(242,563)	697,360	24,431
Ending Balance (in shares) at Dec. 31, 2016	17,690,611		17,690,611
Cumulative effect of change in accounting principle	$ (473)				(473)		(473)
Stock Issued During Period, Shares, Conversion of Convertible Securities			568,702
Adjustments to Additional Paid in Capital, Warrant Issued	2,373		$ 1	2,372			2,373
Share-based compensation, net (in shares)			169,087
Share-based compensation, net	2,548		$ 1	8,943	(6,396)		2,548
Net income (loss)	$ 138,573				135,303		135,303	3,270
Treasury Stock, Shares, Acquired	(513,801)		(513,801)
Treasury Stock, Value, Acquired, Cost Method	$ 55,947		$ 1	12,434	43,512		55,947
Dividends declared to noncontrolling interests	785							785
Other Comprehensive Income (Loss), Net of Tax	46,536					44,932	44,932	1,604
Ending Balance at Dec. 31, 2017	$ 855,089	$ 0	$ 18	$ 512,815	$ 511,367	$ (197,631)	$ 826,569	$ 28,520
Ending Balance (in shares) at Dec. 31, 2017	17,914,599		17,914,599