Operating Segment and Sales and Credit Concentrations (Details 2)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Affiliated Entity [Member] | Manufacturing [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	0.10%	0.10%	0.10%	0.20%
Affiliated Entity [Member] | Railcar Leasing [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	0.20%	0.00%	0.20%	0.00%
Affiliated Entity [Member] | Railcar Services [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	4.00%	4.80%	4.70%	4.70%
Sales Revenue, Segment [Member] | Manufacturing [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	34.30%	46.10%	32.50%	33.90%
Accounts Receivable [Member] | Manufacturing [Member]
Segment Reporting Information [Line Items]
Percentage of total consolidated revenues from significant customers	30.30%		30.30%		53.40%