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Income Taxes - Significant Portions of the Deferred Tax Assets and Deferred Tax Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Deferred tax assets |  |
Deferred compensation and retirement plan | $ 9,667 | $ 10,246
Accrued expenses not deductible until paid | 1,177 | 33
Lease liability | 6,979 | 5,591
Investment in foreign subsidiaries, outside basis difference | 1,604 | 1,047
Interest Expense limitations | 971 | 913
Other, net | 1,320 | 1,667
Foreign net operating loss carryforwards | 1,382 | 1,623
State net operating loss carryforwards | 5,309 | 5,184
Foreign tax credit carryforwards | 3,730 | 4,212
General Business Credit Carryovers | 538 | 546
Total gross deferred tax assets | 32,677 | 31,062
Less valuation allowances | (7,091) | (7,652)
Net deferred tax assets | 25,586 | 23,410
Deferred tax liabilities |  |
Property, plant and equipment | (1,485) | (2,024)
Right-of-use asset | (6,144) | (4,765)
Other, net | (689) | (315)
Total gross deferred tax liabilities | (8,318) | (7,104)
Net deferred tax assets | $ 17,268 | $ 16,306

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