Net Income Per Share Attributable to Cooper-Standard Holdings Inc. - Basic and Diluted Net Income Per Share Attributable (Detail) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Earnings Per Share [Abstract]
Net income attributable to Cooper-Standard Holdings Inc.	$ 22,666	$ 20,596	$ 55,595	$ 68,729
Less: 7% Preferred stock dividends (paid or unpaid)	0	(1,419)	0	(4,569)
Less: Undistributed earnings allocated to participating securities	0	(4,033)	0	(13,101)
Net income available to Cooper-Standard Holdings Inc. common stockholders	22,666	15,144	55,595	51,059
Increase (decrease) in fair value of share-based awards	(18)	212	0	466
Diluted net income available to Cooper-Standard Holdings Inc. common stockholders	$ 22,648	$ 15,356	$ 55,595	$ 51,525
Basic weighted average shares of common stock outstanding	17,066,067	13,045,575	16,882,229	14,621,535
Dilutive effect of:
Restricted common stock	169,227	144,086	152,386	206,588
Restricted 7% preferred stock	0	0	0	19,949
Warrants	944,002	899,420	996,840	800,116
Options	236,388	162,878	101,397	139,655
Diluted weighted average shares of common stock outstanding	18,415,684	14,251,959	18,132,852	15,787,843
Basic net income per share attributable to Cooper-Standard Holdings Inc.	$ 1.33	$ 1.16	$ 3.29	$ 3.49
Diluted net income per share attributable to Cooper-Standard Holdings Inc.	$ 1.23	$ 1.08	$ 3.07	$ 3.26