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v3.24.1

Income Taxes (Components of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Income Tax Disclosure [Abstract] |  |
Deferred tax assets, Accrued postretirement and pension benefits | $ 224 | $ 360
Deferred tax liabilities, Intangible assets | (30) | (26)
Deferred tax assets, Accrued expenses | 2,444 | 2,326
Deferred tax liabilities, Prepaid expenses | (682) | (1,155)
Deferred tax assets, Inventory valuation | 524 | 1,219
Deferred tax assets, Property, plant and equipment and railcars on operating leases |  | 0
Deferred tax liabilities, Property, plant and equipment and railcars on operating leases | (598) | (1,166)
Deferred tax assets, Net operating loss, tax credit, and interest carryforwards | 69,371 | 65,218
Deferred tax assets, Stock-based compensation expense | 1,782 | 1,715
Deferred tax assets, Other |  | 371
Deferred tax liabilities, Other | (977) | (1,448)
Deferred tax liabilities, Right of use asset | (12,671) | (10,902)
Deferred tax assets, Lease liability | 13,354 | 11,376
Deferred Tax Assets, Gross, Total | 87,699 | 82,585
Deferred Tax Liabilities, Gross, Total | (14,958) | (14,697)
Deferred Tax Assets, Valuation Allowance | (71,640) | (67,881)
Deferred tax assets, net, total | 16,059 | 14,704
Deferred tax liabilities, net, total | (14,958) | (14,697)
Increase in valuation allowance | $ 3,759 | $ 677

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