Segment Information - Schedule of Operating Segment Reporting Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting Information [Line Items]
Total sales	$ 472.3	$ 457.7
Other operating expense	1.2	0.2
Operating income (loss)	52.9	62.8
Depreciation and amortization	31.0	30.7
Stock-based compensation	13.1	12.9
Accrual basis additions to capital expenditures	18.6	16.8
Intersegment Elimination
Segment Reporting Information [Line Items]
Total sales	(23.6)	(20.3)
Corporate & Other and Intersegment Elimination
Segment Reporting Information [Line Items]
Total sales	(23.6)	(20.3)
Other operating expense	0.0	0.0
Operating income (loss)	(23.7)	(22.4)
Depreciation and amortization
Stock-based compensation	9.2	9.0
Accrual basis additions to capital expenditures
Composite Materials
Segment Reporting Information [Line Items]
Total sales	379.5	378.2
Composite Materials | Intersegment Elimination
Segment Reporting Information [Line Items]
Total sales	23.3	19.3
Composite Materials | Operating Segments
Segment Reporting Information [Line Items]
Total sales	402.8	397.5
Other operating expense	0.8	0.2
Operating income (loss)	63.7	73.2
Depreciation and amortization	27.2	27.2
Stock-based compensation	3.1	3.1
Accrual basis additions to capital expenditures	16.7	13.1
Engineered Products
Segment Reporting Information [Line Items]
Total sales	92.8	79.5
Engineered Products | Intersegment Elimination
Segment Reporting Information [Line Items]
Total sales	0.3	1.0
Engineered Products | Operating Segments
Segment Reporting Information [Line Items]
Total sales	93.1	80.5
Other operating expense	0.4	0.0
Operating income (loss)	12.9	12.0
Depreciation and amortization	3.8	3.5
Stock-based compensation	0.8	0.8
Accrual basis additions to capital expenditures	$ 1.9	$ 3.7