Income Taxes - Schedule of Income Tax Benefit (Expense) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current income tax benefit (expense):
Domestic	$ 61	$ 125	$ 41
Foreign	(1,669)	(3,294)	(3,062)
Total income tax expense	(1,608)	(3,169)	(3,021)
Deferred income tax benefit (expense):
Domestic	5,490	3,713	233
Foreign	(1,261)	(1,471)	107
Total income tax expense	4,229	2,242	340
Income tax benefit (expense)	$ 2,621	$ (927)	$ (2,681)