Derivative Instruments and Hedging Activities - Carrying Values of Derivative Instruments (Detail) - Designated as Hedging Instrument - USD ($) $ in Thousands		Dec. 31, 2018	Dec. 31, 2017
Derivative [Line Items]
Derivative Net Carrying Value		$ 463	$ (426)
Foreign exchange contracts, net
Derivative [Line Items]
Derivative Net Carrying Value	[1]	3,128	(426)
Interest Rate Swap
Derivative [Line Items]
Derivative Net Carrying Value	[1]	(2,665)
Prepaid Expenses And Other Current Assets
Derivative [Line Items]
Fair Value— Assets		3,128	621
Prepaid Expenses And Other Current Assets | Foreign exchange contracts, net
Derivative [Line Items]
Fair Value— Assets	[1]		621
Prepaid Expenses And Other Current Assets | Interest Rate Swap
Derivative [Line Items]
Fair Value— Assets		0
Fair Value— (Liabilities)		(2,665)
Other Current Liabilities
Derivative [Line Items]
Fair Value— (Liabilities)		(2,665)	(1,047)
Other Current Liabilities | Foreign exchange contracts, net
Derivative [Line Items]
Fair Value— Assets	[1]	3,128
Fair Value— (Liabilities)	[1]	$ 0	$ (1,047)

[1] Assets are included in prepaid expenses and other and liabilities are included in other accrued expenses on the accompanying consolidated balance sheets.