Leases (Details)		1 Months Ended					12 Months Ended
	Jan. 03, 2025 USD ($) ft²	Nov. 30, 2024 USD ($) ft²	Mar. 31, 2024 USD ($) ft²	Jun. 30, 2022 USD ($) ft²	May 31, 2022 USD ($) ft²	Jul. 31, 2021 USD ($) ft²	Dec. 31, 2024 USD ($) ft² item lease building
Lessee, Lease, Description [Line Items]
Area of leased space | ft²							162,000
Number of building leased | building							2
Number of asset groups identified | item							3
Impairment of long-lived assets (non-cash)							$ 4,513,000
Vacant General Laboratory Space
Lessee, Lease, Description [Line Items]
Expected sublease income			$ 800,000
Discount rate			9.70%
Vivarium Laboratory Space
Lessee, Lease, Description [Line Items]
Expected sublease income			$ 600,000
Discount rate			9.70%
Sublease
Lessee, Lease, Description [Line Items]
Expects to receive base rent							$ 46,414,000
Asset Groups Subject To Impairment Evaluation
Lessee, Lease, Description [Line Items]
Number of asset groups identified | item							2
Dublin
Lessee, Lease, Description [Line Items]
Area of leased space | ft²					700
Lease term					2 years
Operating lease expenses					$ 400,000
Annual base rent expenses					$ 200,000
Option to terminate					true
Lease termination notice period					3 months
Renewal term					2 years
South San Francisco
Lessee, Lease, Description [Line Items]
Area of leased space | ft²							162,000
Area of subleased property | ft²							118,000
Option to extend		true
Number of separate Subleases entered | lease							3
South San Francisco | Subsequent Events
Lessee, Lease, Description [Line Items]
Area of subleased property | ft²	12,000
Sublease term	2 years
Monthly base rent	$ 67,000
Increase in annual base rent (as a percent)	3.50%
Expected sublease income	$ 1,500,000
Renewal term	1 year
South San Francisco | Sublease
Lessee, Lease, Description [Line Items]
Area of subleased property | ft²		11,000	8,000	78,000		21,000
Sublease term		2 years 6 months	2 years
Option to extend			false
Option to extend sublease				false		false
Monthly base rent		$ 16,250	$ 38,000	$ 500,000		$ 100,000
Increase in annual base rent (as a percent)		3.00%	3.00%	3.00%		3.00%
Operating sublease income		$ 3,000,000
Expected sublease income						$ 13,100,000
Reduction in expenses				$ 6,500,000
Tenant improvement allowance				8,900,000
Expects to receive base rent				51,700,000
Premium component in sublease income				$ 13,500,000		$ 4,200,000
Percentage of excess sublease income over lease obligations received to be shared with lessor				50.00%		50.00%
Premium component in sublease income to be shared with lessor				$ 6,700,000		$ 2,100,000
Percentage of excess sublease income over lease obligations to be retained				50.00%		50.00%
South San Francisco | Asset Groups Subject To Impairment Evaluation
Lessee, Lease, Description [Line Items]
Impairment of long-lived assets (non-cash)							$ 4,500,000