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Derivative Instruments and Hedging Activities Carrying Values of Derivative Instruments (Detail) - Designated as Hedging Instrument - USD ($)
$ in Thousands
Jun. 30, 2019
Dec. 31, 2018
Derivative [Line Items]    
Derivative Net Carrying Value $ (8,046) $ 463
Foreign Exchange Contract    
Derivative [Line Items]    
Derivative Net Carrying Value [1] 602 3,128
Interest rate contract    
Derivative [Line Items]    
Derivative Net Carrying Value [1] (8,648) (2,665)
Prepaid Expenses and Other Current Assets    
Derivative [Line Items]    
Fair Value— Assets 602 3,128
Prepaid Expenses and Other Current Assets | Foreign Exchange Contract    
Derivative [Line Items]    
Fair Value— Assets [1]   3,128
Prepaid Expenses and Other Current Assets | Interest rate contract    
Derivative [Line Items]    
Fair Value— Assets [1] (8,648) (2,665)
Other Current Liabilities    
Derivative [Line Items]    
Fair Value— (Liabilities) $ (8,648) (2,665)
Other Current Liabilities | Foreign Exchange Contract    
Derivative [Line Items]    
Fair Value— (Liabilities) [1]   $ 0
[1]