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Inventories (Schedule of Inventory Current) (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Inventory Disclosure [Abstract]    
Raw materials $ 79,250 $ 46,421
Work in process 26,339 4,527
Finished new railcars 11,911 8,783
Parts inventory 4,571 4,586
Total inventories, net $ 122,071 $ 64,317