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Income Taxes - Components of Deferred Tax Asset (Liability) (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Deferred tax assets: |  |
Net operating loss carryforwards | $ 24,107 | $ 24,467
Interest disallowance carryforward | 24 | 266
Pension | 227 | 9,149
Operating lease liability | 7,362 | 10,816
Other | 14,732 | 18,997
State credits | 13,110 | 12,733
Foreign withholding taxes | 9,083 | 9,083
Foreign tax credit | 0 | 62,752
Valuation allowance | (39,857) | (34,189)
Deferred tax asset net of valuation | 28,788 | 114,074
Deferred tax liabilities: |  |
Depreciation | (71,815) | (92,922)
Inventory | (2,899) | (4,946)
Intangibles | (62,557) | (117,063)
Operating lease right-of-use assets | (7,384) | (11,250)
Other | (10,713) | (13,743)
Deferred tax liability | (155,368) | (239,924)
Deferred Tax Liabilities, Net | (126,580) | $ (125,850)
Tax Credit Carryforward, Valuation Allowance | 12,012 |
Operating loss carryforward, valuation allowance | $ 18,762 |

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