Derivative Instruments and Hedging Activities - Open Foreign Currency Contracts (Detail) - Cash Flow Hedging - Foreign exchange contracts, net - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Derivative [Line Items]
Notional Amounts (in U.S. dollars)	$ 209,300	$ 134,400
Net Unrealized Gain (Loss)	(2,300)	(100)
Australian Dollar
Derivative [Line Items]
Notional Amounts (in U.S. dollars)	26,000	16,000
Net Unrealized Gain (Loss)	(500)	(100)
Canadian Dollar
Derivative [Line Items]
Notional Amounts (in U.S. dollars)	169,800	101,400
Net Unrealized Gain (Loss)	(2,800)	(1,100)
Mexican Peso
Derivative [Line Items]
Notional Amounts (in U.S. dollars)	13,500	17,000
Net Unrealized Gain (Loss)	$ 1,000	$ 1,100