- Costs Net of Billings By Balance Sheet Location (Details) - USD ($) $ in Thousands	Feb. 28, 2017	Feb. 29, 2016
Contractors [Abstract]
Cost and estimated earnings in excess of billings on uncompleted contracts	$ 20,546	$ 32,287
Billings in excess of costs and estimated earnings on uncompleted contracts	(11,948)	(9,237)
Total costs net of billings	$ 8,598	$ 23,050