Financial Information by Segment - Schedule of Segment Reconciliation (Details) € in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2025 EUR (€)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)
Segment Reporting Information [Line Items]
Net sales from external customers	$ 450,900,000		$ 463,400,000	$ 1,395,000,000	$ 1,443,300,000
Cost of sales	365,300,000		355,900,000	1,112,900,000	1,103,800,000
Selling, general and administrative expenses	57,500,000		57,900,000	173,600,000	179,700,000
Loss (recovery) due to misappropriation of assets, net	(7,300,000)	€ (6.3)	60,700,000	(6,500,000)	60,700,000
Goodwill impairment	80,800,000		0	80,800,000	0
Other segment items	8,300,000		4,200,000	24,600,000	20,000,000.0
Equity in earnings of affiliated companies, net of tax	500,000		200,000	1,600,000	500,000
LTIP and other non-operating charges	3,700,000		3,700,000	10,000,000.0	10,200,000
Depreciation and amortization of intangible assets, right of use assets, and property, plant and equipment	33,700,000		30,800,000	97,200,000	90,000,000.0
Adjusted EBITDA	57,700,000		80,100,000	192,700,000	240,500,000
Assets	1,963,900,000		1,996,300,000	1,963,900,000	1,996,300,000	$ 1,857,300,000
Capital expenditures	40,900,000		47,900,000	112,300,000	135,700,000
Rubber
Segment Reporting Information [Line Items]
Goodwill impairment				32,300,000
Specialty
Segment Reporting Information [Line Items]
Goodwill impairment				48,500,000
Operating segments | Rubber
Segment Reporting Information [Line Items]
Net sales from external customers	290,900,000		300,900,000	916,200,000	944,400,000
Cost of sales	237,900,000		230,000,000.0	739,300,000	722,700,000
Selling, general and administrative expenses	34,100,000		35,900,000	104,400,000	113,500,000
Loss (recovery) due to misappropriation of assets, net	0		0	0	0
Goodwill impairment	32,300,000			32,300,000
Other segment items	4,200,000		2,200,000	12,100,000	9,700,000
Equity in earnings of affiliated companies, net of tax	500,000		200,000	1,600,000	500,000
LTIP and other non-operating charges	1,800,000		1,600,000	4,600,000	5,300,000
Depreciation and amortization of intangible assets, right of use assets, and property, plant and equipment	19,100,000		18,300,000	59,200,000	53,100,000
Adjusted EBITDA	36,100,000		52,900,000	125,800,000	157,400,000
Assets	1,109,900,000		1,101,500,000	1,109,900,000	1,101,500,000
Capital expenditures	15,500,000		23,700,000	46,400,000	68,200,000
Operating segments | Specialty
Segment Reporting Information [Line Items]
Net sales from external customers	160,000,000.0		162,500,000	478,800,000	498,900,000
Cost of sales	127,400,000		125,900,000	373,600,000	381,100,000
Selling, general and administrative expenses	23,200,000		21,700,000	68,400,000	65,500,000
Loss (recovery) due to misappropriation of assets, net	0		0	0	0
Goodwill impairment	48,500,000			48,500,000
Other segment items	4,100,000		3,100,000	12,500,000	11,400,000
Equity in earnings of affiliated companies, net of tax	0		0	0	0
LTIP and other non-operating charges	1,700,000		2,900,000	4,600,000	5,300,000
Depreciation and amortization of intangible assets, right of use assets, and property, plant and equipment	14,600,000		12,500,000	38,000,000.0	36,900,000
Adjusted EBITDA	21,600,000		27,200,000	66,900,000	83,100,000
Assets	701,600,000		730,500,000	701,600,000	730,500,000
Capital expenditures	25,400,000		24,200,000	65,900,000	67,500,000
Corporate
Segment Reporting Information [Line Items]
Net sales from external customers	0		0	0	0
Cost of sales	0		0	0	0
Selling, general and administrative expenses	200,000		300,000	800,000	700,000
Loss (recovery) due to misappropriation of assets, net	(7,300,000)		60,700,000	(6,500,000)	60,700,000
Goodwill impairment	0			0
Other segment items	0		(1,100,000)	0	(1,100,000)
Equity in earnings of affiliated companies, net of tax	0		0	0	0
LTIP and other non-operating charges	200,000		(800,000)	800,000	(400,000)
Depreciation and amortization of intangible assets, right of use assets, and property, plant and equipment	0		0	0	0
Adjusted EBITDA	0		0	0	0
Assets	152,400,000		164,300,000	152,400,000	164,300,000
Capital expenditures	$ 0		$ 0	$ 0	$ 0