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Revenue Recognition (Schedule of Revenue Recognition) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Disaggregation of Revenue [Line Items]    
Revenues from contracts with customers $ 92,419 $ 31,295
Leasing revenues 817 1,075
Total revenues 93,236 32,370
Railcar Sales [Member]    
Disaggregation of Revenue [Line Items]    
Revenues from contracts with customers 89,308 28,929
Parts Sales [Member]    
Disaggregation of Revenue [Line Items]    
Revenues from contracts with customers $ 3,111 $ 2,366