Operating Segment and Sales Concentrations (Details 2)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Affiliated Entity [Member] | Manufacturing [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	0.20%	0.00%	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	1.00%	4.10%	3.40%	4.50%
Sales Revenue, Segment [Member] | Manufacturing [Member]
Segment Reporting Information [Line Items]
Concentration Risk, Percentage	34.70%	38.90%	13.90%	29.70%