Net Income Per Share Attributable to Cooper-Standard Holdings Inc. - Basic and Diluted Net Income Per Share Attributable (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Earnings Per Share [Abstract]
Net income available to Cooper-Standard Holdings Inc. common stockholders	$ 145,296	$ 41,877	$ 141,836	$ 98,669
Basic weighted average shares of common stock outstanding	17,312,359	18,000,579	17,423,162	17,996,058
Dilutive effect of common stock equivalents	64,099	371,196	67,806	423,894
Diluted weighted average shares of common stock outstanding	17,376,458	18,371,775	17,490,968	18,419,952
Basic net income per share attributable to Cooper-Standard Holdings Inc.	$ 8.39	$ 2.33	$ 8.14	$ 5.48
Diluted net income per share attributable to Cooper-Standard Holdings Inc.	$ 8.36	$ 2.28	$ 8.11	$ 5.36