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Derivative Financial Instruments - Schedule of Fair Values of Derivatives (Detail) - Foreign Exchange Contracts [Member] - USD ($)
$ in Thousands
Sep. 30, 2016
Dec. 31, 2015
Prepaid Expenses and Other Current Assets [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets $ 385 $ 773
Accrued Expenses [Member]    
Derivatives, Fair Value [Line Items]    
Derivative liabilities $ 288 $ 391