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Derivative Assets and Liabilities (Detail) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Derivatives, Fair Value [Line Items]    
Derivative asset, fair value $ 2,310 $ 3,068
Derivative liability, fair value 14,613 8,757
Designated As Hedging Instrument
   
Derivatives, Fair Value [Line Items]    
Derivative asset, fair value 415 3,068
Derivative liability, fair value 12,902 8,270
Designated As Hedging Instrument | Foreign Exchange Forward | Prepaid expenses and other current assets
   
Derivatives, Fair Value [Line Items]    
Derivative asset, fair value 415 3,064
Designated As Hedging Instrument | Foreign Exchange Forward | Other noncurrent assets
   
Derivatives, Fair Value [Line Items]    
Derivative asset, fair value   4
Designated As Hedging Instrument | Foreign Exchange Forward | Accrued liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative liability, fair value 12,432 8,093
Designated As Hedging Instrument | Foreign Exchange Forward | Other noncurrent liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative liability, fair value 470 177
Not Designated As Hedging Instrument | Foreign Exchange Forward | Prepaid expenses and other current assets
   
Derivatives, Fair Value [Line Items]    
Derivative asset, fair value 1,895  
Not Designated As Hedging Instrument | Foreign Exchange Forward | Accrued liabilities
   
Derivatives, Fair Value [Line Items]    
Derivative liability, fair value $ 1,711 $ 487