Leases - Agreements (Details)		1 Months Ended		12 Months Ended
	Jul. 14, 2021 USD ($) ft² uSDollarPerSquareFoot	Aug. 31, 2022 USD ($) uSDollarPerSquareFoot	Jun. 30, 2021 ft² phase	Dec. 31, 2022 USD ($) lease	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Jul. 01, 2025 USD ($) ft²
Lessee, Lease, Description [Line Items]
Addition of right-of-use asset				$ 6,155,000	$ 24,047,000	$ 3,127,000
Monrovia, CA - office and laboratory space
Lessee, Lease, Description [Line Items]
Number of leases | lease				2
Option to extend				true
Renewal term				5 years
Addition of right-of-use asset				$ 300,000
Monrovia, CA - office and laboratory space with additional space
Lessee, Lease, Description [Line Items]
Addition of right-of-use asset				$ 300,000
Lease term			18 months
San Diego, CA - office space
Lessee, Lease, Description [Line Items]
Option to extend				true
Renewal term				5 years
Pasadena, CA - office and laboratory space
Lessee, Lease, Description [Line Items]
Addition of right-of-use asset				$ 15,300,000	$ 29,700,000
Area of property | ft²	83,083		129,543
Lease term	13 years
Phases of lease term | phase			2
Improvement allowance	$ 17,000,000	$ 22,000,000
Initial base monthly rent	$ 386,336	$ 416,246
Rent expense per square foot | uSDollarPerSquareFoot	4.65	5.01
Rent increase (as a percentage)	3.00%
Increase to tenant allowance		$ 5,000,000
Forecast | Pasadena, CA - office and laboratory space
Lessee, Lease, Description [Line Items]
Area of property | ft²							46,460
Improvement allowance							$ 3,300,000