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Derivative Instruments - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Not designated as hedging instruments          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Net gain (loss) recognized in the consolidated statements of operations for derivatives not designated as hedging instruments $ 651 $ (7,730) $ 6,594 $ (49,748)  
Foreign Exchange Forward          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Notional amount 1,150,000 972,000 1,150,000 972,000 $ 931,000
Foreign Exchange Forward | Designated as hedging instruments | Cost of Sales          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Net gain (loss) reclassified from accumulated other comprehensive loss to the consolidated statements of operations for derivatives designated as hedging instruments 2,157 19,152 12,472 41,708  
Foreign Exchange Forward | Not designated as hedging instruments | Cost of Sales          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Net gain (loss) recognized in the consolidated statements of operations for derivatives not designated as hedging instruments 619 896 2,217 (3)  
Currency Swap          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Notional amount $ 16,900 $ 30,000 $ 16,900 $ 30,000  
Maximum | Foreign Exchange Forward          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Maximum term for foreign currency forward exchange contracts     18 months