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Derivatives - Summary of Fair Value Amounts of Company's Derivative Instruments (Detail) - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Derivatives, Fair Value [Line Items]    
Derivative assets $ 322 $ 1,486
Derivative liabilities (3,047) (263)
Total net derivative (liabilities) assets (2,780) 1,223
Derivatives Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Total net derivative (liabilities) assets (2,725) 1,223
Forward Exchange Contracts [Member] | Derivatives Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets 250 1,486
Derivative liabilities (3,030) $ (263)
Foreign Currency Option Contracts [Member] | Derivatives Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets 72  
Derivative liabilities $ (17)