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Revenue Recognition (Schedule of Revenue Recognition) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 77,287	$ 71,514	$ 224,478	$ 328,447
Leasing revenues	1,681	511	4,206	1,786
Total revenues	78,968	72,025	228,684	330,233
Railcar Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	73,540	69,309	213,788	321,793
Parts sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	3,745	2,180	10,630	6,549
Other sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 2	$ 25	$ 60	$ 105

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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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