Debt - Schedule of Components of Interest Expense of Term Loan (Detail) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2022	Mar. 31, 2021
Debt Instrument [Line Items]
Interest expense	$ 302	$ 294
SVB Term Loan [Member]
Debt Instrument [Line Items]
Interest payments	148	149
Accrual of the final payment fee	117	118
Accretion and amortization of term loan discounts	37	27
Interest expense	$ 302	$ 294

Amount of the cost of borrowed funds accounted for as interest expense.

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Name:	us-gaap_InterestExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration