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Derivative Instruments and Hedging Activities - Schedule of Change in Derivatives Designated Hedging Instruments Recorded in Other Comprehensive Income (OCI) and Reclassified to Income, Net of Tax (Detail)
$ in Thousands
3 Months Ended
Mar. 31, 2017
USD ($)
Foreign Exchange Contracts [Member] | Derivatives Designated as Hedging Instruments [Member]  
Derivative [Line Items]  
Amount of Gains (Losses) Recognized in OCI on Derivatives $ 79