Derivative Instruments - Derivatives Not Designated as Hedging Instruments by Classification and Amount of Gains and Losses (Detail) - Not Designated As Hedging Instrument - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized in the statements of operations for derivatives not designated as hedging instruments	$ 2,530	$ (23,353)	$ 70,711
Foreign currency forward exchange contracts | Other non-operating expense, net
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized in the statements of operations for derivatives not designated as hedging instruments	2,530	(23,109)	70,200
Foreign currency forward exchange contracts | Cost of sales
Derivative Instruments, Gain (Loss) [Line Items]
Net gain (loss) recognized in the statements of operations for derivatives not designated as hedging instruments	$ 0	$ (244)	$ 511