Leases - Additional Information (Details) $ in Thousands			1 Months Ended		12 Months Ended
	Dec. 21, 2023 USD ($)	Jul. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) ft²	May 31, 2022 USD ($) ft²	Dec. 31, 2024 USD ($) Lease	Dec. 31, 2023 USD ($) ft²
Lessee Lease Description [Line Items]
Initial base rent					$ 6,400	$ 2,000
Operating lease right-of-use assets			$ 33,233		19,924	33,233
Restricted cash			1,392		1,993	1,392
Lessee, Operating Lease, Option to Extend				one additional five-year term
Operating lease cost					$ 6,410	$ 1,966
Watertown Lease
Lessee Lease Description [Line Items]
Operating lease right-of-use assets		$ 4,900
Extended lease term		2027-04
Lessee, Operating Lease, Existence of Option to Extend [true false]					true
Waltham Lease
Lessee Lease Description [Line Items]
Operating lease right-of-use assets	$ 27,600
Payments for tenant improvements	8,300
Number of leases | Lease					2
Office and Laboratory | Waltham Lease
Lessee Lease Description [Line Items]
Initial base rent				$ 2,200
Percentage of annual rent increment				3.00%
Area of property | ft²				29,000
Payments for tenant improvements	5,900
Office and Laboratory | Waltham Sublease
Lessee Lease Description [Line Items]
Initial base rent			$ 1,800
Percentage of annual rent increment			3.00%			3.00%
Area of property | ft²			24,000			24,000
Certificate of Deposits | Watertown Lease
Lessee Lease Description [Line Items]
Restricted cash		$ 300
Letter of Credit | Watertown Lease
Lessee Lease Description [Line Items]
Secured debt obligations		$ 300
Letter of Credit | Waltham Lease
Lessee Lease Description [Line Items]
Restricted cash	$ 1,100
Letter of Credit | Waltham Sublease
Lessee Lease Description [Line Items]
Restricted cash			$ 600			$ 600