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Leased Railcars (Narrative) (Details) - USD ($) $ in Thousands | 12 Months Ended
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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

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