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Revenue Recognition (Schedule of Revenue Recognition) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 64,844	$ 118,031	$ 147,191	$ 256,933
Leasing revenues	1,899	641	2,525	1,275
Total revenues	66,743	118,672	149,716	258,208
Railcar Sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	61,169	115,399	140,248	252,484
Parts sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	3,673	2,606	6,885	4,369
Other sales [Member]
Disaggregation of Revenue [Line Items]
Revenues from contracts with customers	$ 2	$ 26	$ 58	$ 80

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- Definition

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
-Topic 842
-SubTopic 30
-Section 45
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-URI http://asc.fasb.org/extlink&oid=77888421&loc=SL77919311-209978

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Section 32
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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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