Summary of Effects of Derivative Instruments (Detail) - USD ($) $ in Thousands	3 Months Ended
	May 31, 2017	May 31, 2016
Derivative [Line Items]
Total, Fair Value	$ 141	$ (391)
Notional value of foreign currency forward contracts not designated as hedges	45,954	34,405
Amount of Unrealized Gain (Loss) Recognized in Income on Derivatives	285	521
Other Current Assets
Derivative [Line Items]
Assets-foreign currency forward contracts not designated as hedges	278	46
Notional value of foreign currency forward contracts not designated as hedges, assets	18,901	6,563
Accounts Payable and Accrued Expenses
Derivative [Line Items]
Liabilities-foreign currency forward contracts not designated as hedges	(137)	(437)
Notional value of foreign currency forward contracts not designated as hedges, liabilities	27,053	27,842
Other Income (Expense), Net | Derivative Liabilities
Derivative [Line Items]
Amount of Unrealized Gain (Loss) Recognized in Income on Derivatives	(320)	(678)
Other Income (Expense), Net | Derivative Assets
Derivative [Line Items]
Amount of Unrealized Gain (Loss) Recognized in Income on Derivatives	$ 605	$ 1,199