CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Income Statement [Abstract]
Sales	$ 705,973	$ 708,362	$ 1,373,042	$ 1,384,787
Cost of products sold	612,922	625,422	1,202,813	1,240,204
Gross profit	93,051	82,940	170,229	144,583
Selling, administration & engineering expenses	51,210	52,408	102,401	107,774
Amortization of intangibles	1,710	1,605	3,322	3,266
Restructuring charges	2,852	17,781	4,963	18,914
Operating income	37,279	11,146	59,543	14,629
Interest expense, net of interest income	(28,712)	(28,635)	(57,331)	(57,916)
Equity in earnings of affiliates	1,708	1,302	3,484	3,572
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	0	(46,787)	0	(46,787)
Other (expense) income, net	(3,667)	(5,129)	5,217	(8,778)
Income (loss) before income taxes	6,608	(68,103)	10,913	(95,280)
Income tax expense	8,081	8,080	10,784	12,211
Net (loss) income	(1,473)	(76,183)	129	(107,491)
Net loss (income) attributable to noncontrolling interests	72	(60)	22	(412)
Net (loss) income attributable to Cooper-Standard Holdings Inc.	$ (1,401)	$ (76,243)	$ 151	$ (107,903)
Earnings per share
Basic	$ (0.08)	$ (4.34)	$ 0.01	$ (6.16)
Diluted	$ (0.08)	$ (4.34)	$ 0.01	$ (6.16)