Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2025

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The carrying amount of goodwill attributable to each reportable segment for the years ended December 31, are as follows:

Goodwill	Rubber		Specialty		Total
	(In millions)
Balance as of January 1, 2024	$	30.5	$	45.6	$	76.1
Foreign currency impact	(1.9)		(2.7)		(4.6)
Balance as of December 31, 2024	28.6		42.9		71.5
Impairment	(32.3)		(48.5)		(80.8)
Foreign currency impact	3.7		5.6		9.3
Balance as of December 31, 2025(1)	$	—	$	—	$	—

(1) At December 31, 2025, accumulated goodwill impairment was $80.8 million.

Schedule of Intangible Assets

The components of identifiable intangible assets, at cost, and the related accumulated amortization, at December 31, are as follows:

	2025						2024
	Cost		Accumulated Amortization		Net		Cost		Accumulated Amortization		Net
	(In millions)
Developed technology and patents	$	74.2	$	72.0	$	2.2	$	65.6	$	59.7	$	5.9
Customer relationships	78.8		76.5		2.3		70.4		68.1		2.3
Trademarks	20.2		19.5		0.7		17.9		16.2		1.7
Long-term contracts	8.2		3.8		4.4		7.3		2.4		4.9
Other intangible assets	49.0		44.4		4.6		46.7		43.0		3.7
Total intangible assets	$	230.4	$	216.2	$	14.2	$	207.9	$	189.4	$	18.5

Schedule of Future Amortization Expense

The estimated aggregate amortization expense for intangible assets for the fiscal years ending December 31, are as follows:

Year	(In millions)
2026	$	5.0
2027	2.1
2028	2.0
2029	1.2
2030	0.9
Thereafter	3.0
Total aggregated amortization	$	14.2