DARPA Grant Revenue - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 30, 2021	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Segment Reporting Revenue Reconciling Item [Line Items]
Allowable costs of reimbursable	$ 5,000
Reimbursement Amount	$ 5,000
Cooperative Agreement [Member]
Segment Reporting Revenue Reconciling Item [Line Items]
Revenues		$ 0	$ 900	$ 0	$ 2,900
Reimbursable for allowable costs						$ 5,000