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Inventories (Schedule of Inventory Current) (Details) - USD ($)
$ in Thousands
Mar. 31, 2022
Dec. 31, 2021
Inventory Disclosure [Abstract]    
Raw materials $ 40,392 $ 34,885
Work in process 10,961 11,306
Finished new railcars 2,133 4,696
Parts inventory 4,990 5,125
Total inventories, net $ 58,476 $ 56,012