Restructuring, Impairment and Costs of Terminated Program - Non-cash Impairment Charges Pertaining 2022 and 2023 Restructuring Plan (Details) - USD ($) $ in Thousands	3 Months Ended							12 Months Ended		21 Months Ended
	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Total impairment of lease assets								$ (36,962)	$ (67,875)
2022 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total impairment of lease assets	$ 0	$ 1,467	$ 13,261	$ 0	$ 12,361	$ 1,200	$ 52,200			$ 80,489
2022 and 2023 Restructuring Plans
Restructuring Cost and Reserve [Line Items]
Total impairment of lease assets	0	(10,567)	(13,261)	(11,500)	(12,361)	(1,200)	(52,200)			(101,089)
Mission Bay Blvd. South | 2022 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total impairment of lease assets	0	1,467	7,061	0	361	1,200	3,000			13,089
Mission Bay Blvd. South | 2023 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total impairment of lease assets	0	9,100	0	11,500						20,600
Third St | 2022 Restructuring Plan
Restructuring Cost and Reserve [Line Items]
Total impairment of lease assets	$ 0	$ 0	$ 6,200	$ 0	$ 12,000	$ 0	$ 49,200			$ 67,400