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Fair Value Measurements of Financial Assets and Liabilities on Recurring Basis (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 30, 2013
Dec. 31, 2012
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Money market funds $ 23,838 $ 132,242
Available for sale securities 148 390
Foreign exchange derivative assets 657 120
Interest rate swap derivative liabilities   620
Foreign exchange derivative liabilities 2,938 949
Level 1 Inputs
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Money market funds 23,838 132,242
Available for sale securities 148 390
Level 2 Inputs
   
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Foreign exchange derivative assets 657 120
Interest rate swap derivative liabilities   620
Foreign exchange derivative liabilities $ 2,938 $ 949