Leases - Additional Information (Detail) $ in Thousands			3 Months Ended	12 Months Ended
	Jan. 23, 2023 ft²	Mar. 08, 2022 USD ($) ft² Tranche	Jun. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 USD ($)
Disclosure Of Leases [Line Items]
Lease liabilities				$ 23,105	$ 5,469		$ 2,900
ROU assets				$ 21,000	4,983
Operating lease weighted average remaining lease term				12 years 7 months 6 days
Operating lease weighted average discount rate				11.63%
Operating lease payments				$ 1,200	$ 1,400
New Premises [Member]
Disclosure Of Leases [Line Items]
Lease liabilities						$ 1,600
ROU assets						$ 1,700
Massachusetts [Member]
Disclosure Of Leases [Line Items]
Increase in lease liabilities			$ 17,700
Increase in right-of-use assets			$ 17,900
Lease description	The lease term, under ASC 842, commenced during the second quarter of 2024. The Company entered into an amendment to the Northbridge Lease, effective September 30, 2024. Pursuant to the amendment, the Company's obligation to pay base rent began on March 1, 2025.
Massachusetts [Member] | New Premises [Member]
Disclosure Of Leases [Line Items]
Original lease term	15 years 4 months
Area of property covered | ft²	41,141
Lease option to extend	The lease includes a non-cancellable lease term of fifteen years and four months, with two options to extend the lease term for two additional terms of either five years or ten years at 95% of the then-prevailing fair market rent.
Lease renewal rate at 95% of market rent at time of renewal	95.00%
Massachusetts [Member] | Maximum [Member] | New Premises [Member]
Disclosure Of Leases [Line Items]
Additional lease renewal option period	10 years
Massachusetts [Member] | Minimum [Member] | New Premises [Member]
Disclosure Of Leases [Line Items]
Additional lease renewal option period	5 years
Massachusetts [Member] | Second Amendment Lease [Member]
Disclosure Of Leases [Line Items]
Irrevocable standby letter of credit				$ 200
Massachusetts [Member] | Fourth Amendment Lease [Member]
Disclosure Of Leases [Line Items]
Lease commencement date		Mar. 08, 2022
Lease term expiration date		May 31, 2028
Termination of property area | ft²		7,999
Area of property covered | ft²		21,649
Lease existence of option to extend				true
Number of renewal options | Tranche		1
Additional lease renewal option period		5 years
Massachusetts [Member] | Fourth Amendment Lease [Member] | New Premises [Member]
Disclosure Of Leases [Line Items]
Additional Space leased | ft²		11,999
Massachusetts [Member] | Fourth Amendment Lease [Member] | Laboratory and Manufacturing [Member]
Disclosure Of Leases [Line Items]
Area of property covered | ft²		13,650
Massachusetts [Member] | Fourth Amendment Lease [Member] | Maximum [Member]
Disclosure Of Leases [Line Items]
Construction allowance		$ 700