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Revenue Sources and Concentration of Sales (Schedule of Revenue Recognition) (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | $ 356,822 | $ 361,497
Leasing revenues | 1,271 | 3,257
Total revenues | 358,093 | 364,754
Railcar Sales [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | 344,595 | 349,556
Parts Sales [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Revenues from contracts with customers | $ 12,227 | $ 11,941

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