Significant Accounting Policies - Revisions to Statements of Net Income (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Sales	$ 726,189	$ 739,518	$ 764,698	$ 877,995	$ 870,660	$ 860,141	$ 927,555	$ 965,686	$ 3,108,400	$ 3,624,042	$ 3,617,773
Gross profit	65,542	80,205	97,870	115,505	110,329	118,143	150,658	169,175	359,122	548,305	671,086
Income Tax Expense (Benefit)									36,089	(29,400)	71,506
Net income	(70,664)	(6,420)	144,660	(5,363)	(30,486)	31,266	42,516	55,759	62,213	99,055	141,241
Net Income (Loss) Attributable to Noncontrolling Interest									5,316	4,546	(3,270)
Net income attributable to Cooper-Standard Holdings Inc.	$ (67,384)	$ (4,877)	$ 145,205	$ (5,415)	$ (24,207)	$ 31,482	$ 41,191	$ 55,135	$ 67,529	$ 103,601	$ 137,971
Basic (in dollars per share)	$ (4.00)	$ (0.29)	$ 8.39	$ (0.31)	$ (1.36)	$ 1.77	$ 2.29	$ 3.06	$ 3.94	$ 5.79	$ 7.76
Diluted (in dollars per share)	$ (4.00)	$ (0.29)	$ 8.36	$ (0.31)	$ (1.36)	$ 1.73	$ 2.24	$ 2.98	$ 3.92	$ 5.66	$ 7.35
Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Sales										$ 3,629,293	$ 3,618,126
Gross profit										553,556	671,439
Income Tax Expense (Benefit)										(29,683)	74,527
Net income										104,589	138,573
Net Income (Loss) Attributable to Noncontrolling Interest										3,177	(3,270)
Net income attributable to Cooper-Standard Holdings Inc.										$ 107,766	$ 135,303
Basic (in dollars per share)										$ 6.02	$ 7.61
Diluted (in dollars per share)										$ 5.89	$ 7.21
Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Sales		$ 10,497								$ (5,251)	$ (353)
Gross profit										(5,251)	(353)
Income Tax Expense (Benefit)										283	(3,021)
Net income		$ 9,178								(5,534)	2,668
Net Income (Loss) Attributable to Noncontrolling Interest										1,369	0
Net income attributable to Cooper-Standard Holdings Inc.										$ (4,165)	$ 2,668
Basic (in dollars per share)										$ (0.23)	$ 0.15
Diluted (in dollars per share)		$ 0.53								$ (0.23)	$ 0.14