Interest Income (Expense), Net - Schedule of Interest Income (Expense), Net (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Income And Expenses [Abstract]
Interest income	$ 1,968	$ 3,328	$ 4,758	$ 8,472
Interest expense	(12,189)	(12,467)	(38,245)	(36,118)
Interest income (expense), net	$ (10,221)	$ (9,139)	$ (33,487)	$ (27,646)