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Revenue Recognition (Narrative) (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Disaggregation of Revenue [Line Items]
Contract assets, current	$ 0
Contract assets, noncurrent	0
Deferred revenue and customer deposits	32,076,000	$ 5,607,000
Performance obligation	61,379,000
Provision for doubtful accounts	$ 972,000
Minimum [Member] | Railcar Sales [Member]
Disaggregation of Revenue [Line Items]
Accounts Receivable, Term	5 days
Minimum [Member] | Parts Sales [Member]
Disaggregation of Revenue [Line Items]
Accounts Receivable, Term	30 days
Maximum [Member] | Railcar Sales [Member]
Disaggregation of Revenue [Line Items]
Accounts Receivable, Term	10 days
Maximum [Member] | Parts Sales [Member]
Disaggregation of Revenue [Line Items]
Accounts Receivable, Term	45 days

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+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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