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Derivatives and Hedging Activities - Additional Information (Detail) - Derivatives designated as cash flow hedging instruments - USD ($)
3 Months Ended
Mar. 31, 2017
Mar. 31, 2016
Dec. 31, 2016
Derivative Instruments, Gain (Loss) [Line Items]      
Gain (loss) recognized in income, net $ 146,000 $ 25,000  
Foreign exchange forward and option contracts      
Derivative Instruments, Gain (Loss) [Line Items]      
Notional principal amount of Hedging Contracts $ 900,000   $ 3,300,000