Income Tax - Schedule of Pretax Losses for Domestic and Foreign Operations (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
United States	$ (33,316)	$ (15,950)	$ (23,315)
Foreign	(458)	(280)	(448)
Worldwide pre-tax loss	$ (33,774)	$ (16,230)	$ (23,763)