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Derivatives - Additional Information (Detail) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]    
Maximum period for hedging a portion of forecasted foreign currency denominated intercompany sales of inventory 18 months  
Gross notional values of outstanding forward foreign exchange contracts $ 91,280 $ 28,650
Accumulated other comprehensive income realization period 12 months