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Foreign Currency Forward Contracts Outstanding (Detail) (Foreign Exchange Contract, USD $)
In Thousands, unless otherwise specified
May 04, 2014
May 05, 2013
Derivatives designated as hedging instruments | Cash Flow Hedging | Canada, Dollars
   
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Exchange of foreign currency contracts $ 23,000 $ 16,100
Not Designated as Hedging Instrument | Canada, Dollars
   
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Exchange of foreign currency contracts 1,500 [1] 0 [1]
Not Designated as Hedging Instrument | Australia, Dollars
   
Derivative Instruments and Hedging Activities Disclosures [Line Items]    
Exchange of foreign currency contracts $ 10,000 $ 0
[1] These contracts are no longer designated as cash flow hedges due to the related inventory purchases having occurred.