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Financial Derivatives and Hedging Activities - Income or (Loss) from Derivative Instruments Recognized in Results of Operations (Detail) - Forward Foreign Currency Exchange Contracts [Member] - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Costs of Products Sold [Member] | Designated as Hedging [Member]        
Derivative Instruments Gain Loss [Line Items]        
Effective portion of derivative instruments, gain (loss) $ (29) $ (347) $ 1,687 $ (264)
Other - Net [Member] | Designated as Hedging [Member]        
Derivative Instruments Gain Loss [Line Items]        
Ineffective portion of derivative instruments, gain (loss) 40 (69) 126 (399)
Other - Net [Member] | Not Designated as Hedging [Member]        
Derivative Instruments Gain Loss [Line Items]        
Derivative instruments, gain (loss) $ 328 $ 332 $ 719 $ 1,396