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Leased Railcars (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Leases [Line Items]    
Railcars Available for Lease, net $ 20,160 $ 20,933
Railcars Available for Lease, cost 23,717 24,054
Railcars Available for Lease, accumulated depreciation $ 3,557 3,121
Lease term 3 years 6 months  
Depreciation Expense on Leased Railcars $ 646 1,015
Non-cash impairment charges   8,978
Impairment Of Leased Railcars 158 18,951
Impairment and loss on right of use asset 17,540
Lessee, Operating Lease, Discount Rate 12.90%  
Asset Impairment Charges   $ 18,951
Measurement Input, Discount Rate [Member]    
Leases [Line Items]    
Lessee, Operating Lease, Discount Rate   5.80%
Small Cube Covered Hopper Railcars [Member]    
Leases [Line Items]    
Impairment and loss on right of use asset   $ 1,999
Manufacturing [Member]    
Leases [Line Items]    
Assets, fair value   13,175
Impairment Of Leased Railcars   $ 16,952
Manufacturing [Member] | Valuation, Cost Approach [Member]    
Leases [Line Items]    
Railcars Available for Lease, net $ 30,127  
Fair Value, Inputs, Level 3 [Member]    
Leases [Line Items]    
Railcars Availble For Lease, Remaining Useful Life   37 years