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Fair Value of Derivatives as Defined by Accounting Standard (Detail) - USD ($)
$ in Thousands
Aug. 02, 2015
Aug. 03, 2014
Derivatives, Fair Value [Line Items]    
Cash flow hedge foreign currency forward contracts - Other Current Assets $ 610 $ 150
Cash flow hedge foreign currency forward contracts - Other Current Liabilities 0 (198)
Total, net 610 (48)
Foreign currency forward contracts - Other Current Assets 79 0
Foreign currency forward contracts - Other Current liabilities 0 (16)
Total, net $ 79 $ (16)