Business Segments - Adjusted EBITDA to Net Income (Details) - USD ($) $ in Thousands		12 Months Ended
	Jul. 01, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Segment Reporting Information [Line Items]
Adjusted EBITDA		$ 35,677	$ 201,608	$ 372,658
Impairment of assets held for sale	$ 85,622	(86,470)	0	0
Gain on sale of business, net		2,834	191,571	0
Restructuring Charges		(39,482)	(51,102)	(29,722)
Other impairment charges		(17,893)	(23,139)	(88,987)
Pension settlement charges		(184)	(15,997)	(775)
Project Costs		(5,648)	(2,090)	(4,881)
Lease termination costs		(771)	(1,167)	0
Goodwill impairment charges		0	0	(45,281)
Gain on sale of land		0	0	10,377
Cost, Amortization		0	0	1,460
Loss on refinancing and extinguishment of debt		0	0	(770)
EBITDA		(115,056)	299,684	261,903
Income Tax Expense (Benefit)		60,847	(36,089)	29,400
Interest Income (Expense), Nonoperating, Net		(59,167)	(44,113)	(41,004)
Cost, Depreciation and Amortization		(154,229)	(151,953)	(146,698)
Net income attributable to Cooper-Standard Holdings Inc.		(267,605)	67,529	103,601
Parent
Segment Reporting Information [Line Items]
Other impairment charges		(17,417)	(23,139)	(43,706)
Goodwill impairment charges				39,818
Noncontrolling Interest [Member]
Segment Reporting Information [Line Items]
Gain on sale of business, net		$ (3,595)	$ 0	$ 0