Debt - Schedule of Components of Interest Expense of Term Loan (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Debt Instrument [Line Items]
Interest expense	$ 3	$ 292	$ 387	$ 889
SVB Term Loan [Member]
Debt Instrument [Line Items]
Interest payments		170	202	470
Accrual of the final payment fee		89	150	309
Accretion and amortization of term loan discounts		33	30	110
Interest expense		$ 292	$ 382	$ 889