Income Taxes - Significant Components of the Company's Net Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Deferred income tax assets:
Postretirement benefit obligation	$ 0.2	$ 0.3
Inventory	12.5	13.0
Net operating loss and credit carryforwards	17.9	18.9
Operating lease liabilities	10.1	11.3
Compensation	3.3	3.7
Capitalized research and development expenditures	29.6	13.1
Disallowed interest	7.6	11.5
Other	5.8	4.1
Total deferred income tax assets	87.0	75.9
Deferred income tax liabilities:
Depreciation	14.7	15.7
Pension	19.0	17.0
Intangible assets	16.8	16.0
Lease right-of-use assets	10.1	11.3
Other	5.5	4.8
Total deferred income tax liabilities	66.1	64.8
Net deferred income tax assets prior to valuation allowances	20.9	11.1
Valuation allowances	(4.9)	(7.3)
Net deferred income tax asset	$ 16.0	$ 3.8