Deferred Revenue - Schedule of Deferred Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Revenues [Abstract]
Nonrefundable entrance fees	$ 537,821		$ 537,821		$ 518,573
Other deferred revenue	344,049		344,049		325,503
Deferred revenue	881,870		881,870		$ 844,076
Proceeds from nonrefundable entrance fees	31,000	$ 29,000	60,000	$ 50,000
Amortization of nonrefundable entrance fee	20,000	19,000	40,000	38,000
Amortization of other deferred charges	$ 18,000	$ 11,000	$ 31,000	$ 20,000