Income Taxes - Schedule of Income Tax Benefit (Expense) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Current income tax benefit (expense):
Domestic	$ 63	$ 61	$ 125
Foreign	(10,203)	(1,669)	(3,294)
Total income tax expense	(10,140)	(1,608)	(3,169)
Deferred income tax benefit (expense):
Domestic	(10,680)	5,490	3,713
Foreign	(10,236)	(1,261)	(1,471)
Total income tax expense	(20,916)	4,229	2,242
Income tax benefit (expense)	$ (31,056)	$ 2,621	$ (927)