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Fair Values of Derivative Financial Instruments Included in Consolidated Balance Sheets (Detail) - Fair Value, Observable inputs, Level 2 - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Designated as Hedging Instrument | Interest Rate Contract | Prepaid expenses    
Derivatives, Fair Value [Line Items]    
Fair Value of Derivative Assets $ 42 $ 11
Designated as Hedging Instrument | Interest Rate Contract | Other assets    
Derivatives, Fair Value [Line Items]    
Fair Value of Derivative Assets 157  
Not Designated as Hedging Instrument | Foreign exchange contract | Accrued expenses    
Derivatives, Fair Value [Line Items]    
Fair Value of Derivative Liabilities $ 0 $ 1,951