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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 6 Months Ended
Jun. 30, 2013
Jul. 01, 2012
Jun. 30, 2013
Jul. 01, 2012
Dec. 31, 2012
Fair Value, Option, Quantitative Disclosures          
Derivatives asset not designated as hedging instruments $ 7   $ 7   $ 121
Foreign exchange contracts derivatives not designated as hedging instruments, Gains (Losses) Recognized in Statement of Operations 1,818 (2,360) 4,067 520  
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 7   7   121
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 $ 1,818 $ (2,360) $ 4,067 $ 520