Leases - Tenant Updates (Details) $ in Thousands		3 Months Ended		12 Months Ended
	Oct. 26, 2023 USD ($) lease	Dec. 31, 2023 lease	Mar. 31, 2023 USD ($) lease	Dec. 31, 2023 USD ($) lease	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Lessor, Lease, Description [Line Items]
Straight line rent				$ 14,387	$ 49,183	$ 31,188
Litigation settlement, amount awarded from other party			$ 4,000
Cash paid for amounts included in the measurement of lease liability for operating leases				$ 21,488	$ 12,594	$ 10,620
Sorrento Therapeutics, Inc.
Lessor, Lease, Description [Line Items]
Straight line rent			$ 9,000
Number of leases | lease			4
Number of leases approved | lease		3
Number of lease terminated | lease				4
Graphite Bio, Inc
Lessor, Lease, Description [Line Items]
Number of leases | lease	1
Cash paid for amounts included in the measurement of lease liability for operating leases	$ 37,000
Termination fees	21,000
Prepayment of rent	16,000
Rent adjustments	$ 37,000