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Derivative Instruments and Hedging Activities - Schedule of Changes in Derivatives Designated Hedging Instruments Recorded in Other Comprehensive Income (OCI) and Reclassified to Income, Net of Tax (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2017
Derivative [Line Items]    
Amount of Gains (Losses) Recognized in OCI on Derivatives $ (127) $ (619)
Foreign Exchange Contracts [Member] | Derivatives Designated as Hedging Instruments [Member]    
Derivative [Line Items]    
Amount of Gains (Losses) Recognized in OCI on Derivatives (127) (619)
Foreign Exchange Contracts [Member] | Derivatives Designated as Hedging Instruments [Member] | Cost of Sales [Member]    
Derivative [Line Items]    
Amount of Gains (Losses) Reclassified from AOCI into Income $ (269) $ (423)