Description of the Business - Additional Information (Detail) - USD ($) $ in Thousands	60 Months Ended
	Sep. 30, 2022	Dec. 31, 2021
Accounting Policies [Abstract]
Accumulated deficit	$ 976,459	$ 811,534
Funds raised through Series A and Series B Convertible Preferred Stock, convertible note financings and completed IPO	$ 1,062,100