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Derivative Instruments (Detail) - USD ($)
$ in Thousands
3 Months Ended
May 31, 2019
May 31, 2018
Derivative [Line Items]    
Total, Fair Value $ 60 $ (679)
Notional value of foreign currency forward contracts not designated as hedges 61,006 49,666
Amount of unrealized gain (loss) recognized in income on derivatives (6) (847)
Other current assets    
Derivative [Line Items]    
Assets—foreign currency forward contracts not designated as hedges 233 111
Notional value of foreign currency forward contracts not designated as hedges, assets 18,185 21,554
Accounts payable and accrued expenses    
Derivative [Line Items]    
Liabilities—foreign currency forward contracts not designated as hedges (173) (790)
Notional value of foreign currency forward contracts not designated as hedges, liabilities 42,821 28,112
Derivative Liabilities | Other expense, net    
Derivative [Line Items]    
Amount of unrealized gain (loss) recognized in income on derivatives (651) (1,136)
Derivative Assets | Other expense, net    
Derivative [Line Items]    
Amount of unrealized gain (loss) recognized in income on derivatives $ 645 $ 289