Commitments and Contingencies - Additional Information (Detail)	1 Months Ended	3 Months Ended		6 Months Ended
	Apr. 30, 2022 USD ($) ft²	Jun. 30, 2024 USD ($) ft²	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) ft²	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease term	31 months	7 months 3 days		7 months 3 days
Amortization of operating right-of-use assets				$ 188,000	$ 169,000
Operating lease payments	$ 1,100,000			$ 4,400,000
Weighted average remaining lease term		4 months 24 days		4 months 24 days
Weighted average discount rate percent		9.00%		9.00%
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		$ 16,700,000		16,700,000
Purchases under the purchase obligation				$ 500,000
Brisbane, California
Lessee, Lease, Description [Line Items]
Sublease agreement area | ft²	12,000	19,000		19,000
Security deposit	$ 40,000
Lease For Corporate Office Facility
Lessee, Lease, Description [Line Items]
Amortization of operating right-of-use assets		$ 100,000	$ 100,000	$ 200,000	200,000
Operating lease payments				$ 200,000	$ 200,000