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Revenue Recognition (Schedule of Revenue Recognition) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 82,347	$ 138,902
Leasing revenues	626	634
Total revenues	82,973	139,536
Railcar Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	79,079	137,085
Parts sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	3,212	1,763
Other sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 56	$ 54

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 30
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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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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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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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