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Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred tax assets: |  |
Foreign tax credit carryforwards | $ 12,614 | $ 19,237
Net operating loss carryforwards | 23,960 | 44,955
Inventories | 11,523 | 9,969
Operating lease liabilities | 4,334 | 4,822
Employee benefits | 4,442 | 4,327
Deferred revenue | 6,437 | 0
Other | 5,770 | 3,357
Gross deferred tax asset | 69,080 | 86,667
Valuation allowance | (29,638) | (36,749)
Net deferred tax asset | 39,442 | 49,918
Deferred tax liabilities: |  |
Tax over book depreciation | (14,337) | (21,077)
Intangible assets | (26,542) | (29,232)
Operating lease assets | (3,632) | (4,013)
Other | (437) | (731)
Deferred tax liability | (44,948) | (55,053)
Net deferred tax liability | $ (5,506) | $ (5,135)

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