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Leased Railcars (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Leases [Line Items]
Railcars Available for Lease, net	$ 11,324	$ 20,160
Railcars Available for Lease, cost	14,995	23,717
Railcars Available for Lease, accumulated depreciation	$ 3,671	3,557
Lease term	2 years 6 months
Depreciation Expense on Leased Railcars	$ 616	646
Impairment Of Leased Railcars	$ 4,515	$ 158
Lessee, Operating Lease, Discount Rate	4.50%
Manufacturing [Member]
Leases [Line Items]
Assets, fair value	$ 7,791
Impairment Of Leased Railcars	4,515
Manufacturing [Member] | Valuation, Cost Approach [Member]
Leases [Line Items]
Railcars Available for Lease, net	$ 12,306

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