Property, Plant and Equipment (Details 1) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015	Sep. 30, 2015
Components of Railcar assets leased to others
Railcar assets leased to others	$ 438,211	$ 434,051	$ 441,267
Less: accumulated depreciation	103,810	95,940	94,167
Railcar assets leased to others, net	$ 334,401	$ 338,111	$ 347,100