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Derivatives - Summary of Fair Value Amounts of Company's Derivative Instruments (Detail) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Derivatives, Fair Value [Line Items]    
Derivative assets   $ 2,485
Derivative liabilities   (1,168)
Total net derivative asset designated as hedging instruments $ 3,170 1,317
Derivatives Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Total net derivative asset designated as hedging instruments 7,629 7,400
Foreign Exchange Contracts [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets 3,492  
Derivative liabilities (322)  
Foreign Exchange Contracts [Member] | Derivatives Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets 3,492 2,485
Derivative liabilities (322) (1,168)
Interest Rate Hedge [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets 4,459 6,083
Interest Rate Hedge [Member] | Derivatives Designated as Hedging Instruments [Member]    
Derivatives, Fair Value [Line Items]    
Derivative assets $ 4,459 $ 6,083