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Derivative Instruments - Additional Information (Detail) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2016
Jun. 30, 2015
Jun. 30, 2016
Jun. 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 $ (18,774) $ 12,223 $ 5,943 $ (42,018)  
Foreign Exchange Forward          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Notional amount 1,210,000 1,210,000 1,210,000 1,210,000 $ 930,800
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 3,305 13,705 10,315 22,556  
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 473 93 1,598 (899)  
Currency Swap          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Notional amount $ 17,100 $ 30,000 $ 17,100 $ 30,000  
Maximum | Foreign Exchange Forward          
Derivative Instruments and Hedging Activities Disclosures [Line Items]          
Maximum term for foreign currency forward exchange contracts     18 months