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Revenue Recognition (Schedule of Revenue Recognition) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 71,979	$ 64,844	$ 141,006	$ 147,191
Leasing revenues	1,682	1,899	3,363	2,525
Total revenues	73,661	66,743	144,369	149,716
Railcar Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	69,173	61,169	135,117	140,248
Parts sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	2,795	3,673	5,859	6,885
Other sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 11	$ 2	$ 30	$ 58

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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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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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