Income Taxes - Schedule of Components of Provision (Benefit) for Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 1	$ 215
State	(14)	93	$ 268
Foreign	171	252	450
Current, Total	158	560	718
Deferred:
Foreign	18	(21)	60
Deferred Income Tax Expense (Benefit)	18	(21)	60
Provision (benefit) for income taxes	$ 176	$ 539	$ 778