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Leased Railcars (Narrative) (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019
Leases [Line Items]
Railcars Available for Lease, net		$ 20,933	$ 38,900
Railcars Available for Lease, cost		24,054	43,045
Railcars Available for Lease, accumulated depreciation		$ 3,121	4,145
Lease term		5 years 6 months
Depreciation Expense on Leased Railcars		$ 1,015	$ 1,365
Non-cash impairment charges	$ 8,978
Impairment Of Leased Railcars		18,951
Impairment and loss on right of use asset	$ 17,540	$ 17,540
Lessee, Operating Lease, Discount Rate		11.30%
Asset Impairment Charges		$ 18,951
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
Lessee, Operating Lease, Discount Rate		5.80%

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