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Inventories (Schedule of Inventory Current) (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Inventories [Abstract]    
Work in process $ 48,281 $ 60,112
Finished new railcars
Parts inventory 4,419 4,450
Total inventories, net $ 52,700 $ 64,562