Commitments and Contingencies - Additional Information (Detail)		3 Months Ended
	Mar. 31, 2025 USD ($)	Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)	Aug. 31, 2024	Jun. 30, 2024 USD ($) ft²	Apr. 30, 2022 ft²
Lessee, Lease, Description [Line Items]
Operating lease term					7 years 4 months 24 days
Amortization of operating right-of-use assets		$ 75,000	$ 93,000
Operating lease payments	$ 4,400,000
Weighted average remaining lease term	6 years 6 months	6 years 6 months
Weighted average discount rate percent	12.90%	12.90%
Research And Development Agreements
Lessee, Lease, Description [Line Items]
Termination and cancellation charges payable	$ 0	$ 0		$ 0
Indemnification Agreement
Lessee, Lease, Description [Line Items]
Termination and cancellation charges payable	0	0		$ 0
Purchase Commitments
Lessee, Lease, Description [Line Items]
Aggregate amount of future minimum purchase obligations	$ 12,600,000	12,600,000
Purchases under the purchase obligation		1,500,000	500,000
Brisbane, California
Lessee, Lease, Description [Line Items]
Sublease agreement area | ft²						19,000	12,000
Security deposit						$ 86,000
Lease For Corporate Office Facility
Lessee, Lease, Description [Line Items]
Amortization of operating right-of-use assets		$ 100,000	100,000
Operating lease payments			$ 100,000