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Revenue Sources and Concentration of Sales (Schedule of Revenue Recognition) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 223,506	$ 310,633
Leasing revenues	6,452	5,886
Total revenues	229,958	316,519
Railcar Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	212,716	296,394
Parts Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	10,699	14,180
Other sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 91	$ 59

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Amount of operating lease income from lease payments and variable lease payments paid and payable to lessor. Includes, but is not limited to, variable lease payments not included in measurement of lease receivable.

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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