Income Taxes - Components of Loss Before Income Taxes (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Domestic	$ (141,939)	$ (130,313)
Foreign	(8)	(10)
Loss before income taxes	$ (141,947)	$ (130,323)