Summary of Effects of Derivative Instruments (Detail) - USD ($) $ in Thousands	3 Months Ended
	May. 31, 2015	May. 31, 2014
Derivative [Line Items]
Total, Fair Value	$ (207)	$ (44)
Amount of Gain (Loss) Recognized in Income on Derivative	(129)	(83)
Forward contracts
Derivative [Line Items]
Notional value of foreign currency foreign currency forward contracts not designated as hedges	32,684	29,433
Other Current Assets
Derivative [Line Items]
Assets-foreign currency forward contracts not designated as hedges	86	39
Notional value of foreign currency foreign currency forward contracts not designated as hedges	2,765	17,325
Accounts Payable and Accrued Expenses
Derivative [Line Items]
Liabilities-foreign currency forward contracts not designated as hedges	(293)	(83)
Notional value of foreign currency foreign currency forward contracts not designated as hedges	29,919	12,108
Other Income (Expense), Net | Derivative Assets
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	680	174
Other Income (Expense), Net | Derivative Liabilities
Derivative [Line Items]
Amount of Gain (Loss) Recognized in Income on Derivative	$ (809)	$ (257)