Income Taxes - Components of Income Tax (Provision) Benefit (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Current income tax provision
Federal	$ (238)	$ (184)
State	(241)	(140)	$ (144)
Foreign	(3,293)	(1,508)	(1,077)
Total current income tax provision	(3,772)	(1,832)	(1,221)
Deferred income tax benefit
Federal	160	21	10,435
State			977
Foreign	639	(57)	134
Total deferred income tax benefit (expense)	799	(36)	11,546
Total income tax benefit (provision)	$ (2,973)	$ (1,868)	$ 10,325