Share-based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based compensation expense:
Total share-based compensation expense	$ 646	$ 3,192	$ 5,129
Cost of revenues: manufacturing operations [Member]
Share-based compensation expense:
Total share-based compensation expense	89	697	909
Cost of revenues: railcar Services [Member]
Share-based compensation expense:
Total share-based compensation expense	7	186	234
Selling, general and administrative [Member]
Share-based compensation expense:
Total share-based compensation expense	$ 550	$ 2,309	$ 3,986