Income Taxes - Components of Loss Before Income Taxes from Continuing Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Domestic	$ (57,135)	$ (46,686)
Foreign	(3,855)	(2,304)
Loss before income taxes	$ (60,990)	$ (48,990)