Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Aug. 31, 2017	Aug. 31, 2016	Aug. 31, 2017	Aug. 31, 2016	Feb. 28, 2017
Effective Income Tax Rate, Continuing Operations	21.20%	267.60%	15.00%	70.20%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent			35.00%
Income Tax Expense (Benefit)	$ 3,465	$ (5,543)	$ (3,963)	$ (6,940)
Unrecognized Tax Benefits, Period Increase (Decrease)	55	$ 64	65	$ 166
Liability for Uncertainty in Income Taxes, Noncurrent	$ 3,328		$ 3,328		$ 3,194