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Income Taxes - Schedule of Components of Deferred Income Tax Balances (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023
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Deferred income tax liabilities: |  |
Plant, equipment, and intangibles | $ (136,386) | $ (98,112)
Right of use asset | (31,603) | (21,440)
Deferred tax liabilities | (167,989) | (119,552)
Deferred income tax assets: |  |
Net operating loss, capital loss, and tax credit carryforwards | 115,591 | 114,896
Reserves and accruals | 54,085 | 41,474
Lease liability | 32,351 | 22,073
Postretirement, pensions, and stock compensation | 13,045 | 17,052
Valuation allowances | (108,064) | (109,676)
Deferred tax assets | 107,008 | 85,819
Net deferred income tax liability | $ (60,981) | $ (33,733)

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