Accounts Payable, Accrued Liabilities, and Other Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Payables and Accruals [Abstract]
Refundable entrance fees	$ 281,242		$ 288,409
Accrued construction costs	163,277		179,995
Accrued interest	35,753		59,342
Other accounts payable and accrued liabilities	215,101		227,638
Accounts payable, accrued liabilities, and other liabilities	695,373		755,384
Unamortized nonrefundable entrance fee	498,000		$ 496,000
Proceeds from collection of nonrefundable entrance fees	21,000	$ 15,000
Amortization of nonrefundable entrance fee	$ 19,000	$ 20,000