Comprehensive Iincome (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	May 31, 2016	May 31, 2015	Feb. 29, 2016
Components of accumulated other comprehensive loss
Balance	$ 665
Tax effects	177	$ (55)
Other comprehensive income (loss)	(684)	$ 93
Balance	(19)
Unrealized Holding Gains (Losses) On Cash Flow Hedges | Foreign currency contracts
Components of accumulated other comprehensive loss
Balance	665
Other comprehensive income before reclassification	(1,019)
Amounts reclassified out of accumulated other comprehensive income (loss)	158
Tax effects	177
Other comprehensive income (loss)	(684)
Balance	$ (19)
Net deferred tax benefits			$ 0