Leases - Additional Information (Details) $ in Thousands		1 Months Ended
	Feb. 15, 2018 ft²	Mar. 31, 2021 ft²	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Apr. 04, 2022 USD ($)
Lessee, Lease, Description [Line Items]
Right Of Use Asset And Liabilities			$ 54,935	$ 68,022
Operating Lease, Liability			56,957
Lease option to extend additional term		5 years
Freezers
Lessee, Lease, Description [Line Items]
Right Of Use Asset And Liabilities					$ 50,800
Operating Lease, Liability					$ 4,800
South San Francisco California | Letter of Credit
Lessee, Lease, Description [Line Items]
Restricted Cash And Cash Equivalents Noncurrent			$ 100
Thousand Oaks California
Lessee, Lease, Description [Line Items]
Lease agreement area of square feet of office, lab and warehouse space | ft²		33,659
Finance Lease, Term of Contract	15 years	10 years 6 months
Percentage of annual increase in base rent		3.00%
Lease agreement area of office, lab and cellular therapy manufacturing space | ft²	90,580
Lease commencement date	Feb. 15, 2018