Accounts Payable, Accrued Liabilities, and Other Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Payables and Accruals [Abstract]
Refundable entrance fees	$ 275,152		$ 275,152		$ 288,409
Accrued construction costs	163,391		163,391		179,995
Accrued interest	59,092		59,092		59,342
Other accounts payable and accrued liabilities	209,184		209,184		227,638
Accounts payable, accrued liabilities, and other liabilities	706,819		706,819		755,384
Unamortized nonrefundable entrance fee	508,000		508,000		$ 496,000
Proceeds from collection of nonrefundable entrance fees	29,000	$ 24,000	50,000	$ 38,000
Amortization of nonrefundable entrance fee	$ 19,000	$ 18,000	$ 38,000	$ 38,000