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Schedule of Effect of Derivative Instruments in Statement of Operations Recognized (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Apr. 01, 2012
Dec. 31, 2012
Fair Value, Option, Quantitative Disclosures      
Derivatives asset not designated as hedging instruments     $ 121
Derivatives liability asset not designated as hedging instruments (475)    
Derivative Assets (Liabilities), at Fair Value, Net 475   121
Foreign exchange contracts derivatives not designated as hedging instruments, (Gains) Losses Recognized in Statement of Operations 2,248 2,880  
Not Designated as Hedging Instrument | Foreign Exchange Contract | Prepayments and other current assets
     
Fair Value, Option, Quantitative Disclosures      
Derivatives asset not designated as hedging instruments     121
Not Designated as Hedging Instrument | Foreign Exchange Contract | Other Accrued Liabilities
     
Fair Value, Option, Quantitative Disclosures      
Derivatives liability asset not designated as hedging instruments 475    
Interest Expense And Other
     
Fair Value, Option, Quantitative Disclosures      
Foreign exchange contracts derivatives not designated as hedging instruments, (Gains) Losses Recognized in Statement of Operations $ 2,248 $ 2,880