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Fair Value of Financial Instruments - Foreign Currency Exchange Contracts Measured at Fair Value on Recurring Basis (Detail) - Fair Value, Measurements, Recurring - Foreign Exchange Contract - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Foreign currency forward contracts—asset position $ 328 $ 3,524
Foreign currency forward contracts—liability position (3,454) (85)
Foreign currency forward contracts, net (3,126) 3,439
Level 2    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Foreign currency forward contracts—asset position 328 3,524
Foreign currency forward contracts—liability position (3,454) (85)
Foreign currency forward contracts, net $ (3,126) $ 3,439