Deferred Revenue - Schedule of Deferred Revenue (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Revenues [Abstract]
Nonrefundable entrance fees	$ 569,412		$ 562,026
Other deferred revenue	354,264		343,607
Deferred revenue	923,676		$ 905,633
Proceeds from nonrefundable entrance fees	29,000	$ 29,000
Amortization of nonrefundable entrance fee	22,000	20,000
Amortization of other deferred charges	$ 15,000	$ 13,000