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Revenue Recognition (Schedule of Revenue Recognition) (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers $ 55,957 $ 36,539 $ 148,376 $ 67,834
Leasing revenues 829 815 1,646 1,890
Total revenues 56,786 37,354 150,022 69,724
Railcar Sales [Member]        
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers 52,764 34,371 142,072 63,300
Parts Sales [Member]        
Disaggregation of Revenue [Line Items]        
Revenues from contracts with customers $ 3,193 $ 2,168 $ 6,304 $ 4,534