Income Taxes - Loss Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Domestic	$ (116,178)	$ (111,101)	$ (41,720)
Foreign	1,091	1,276	1,293
Net loss before provision for income taxes	$ (115,087)	$ (109,825)	$ (40,427)