Supplemental Disclosure of Cash Flow Information - Supplemental Schedule of Non-Cash Operating, Investing and Financing Activities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Acquisition of assets, net of related payables [Line Items]
Loss (gain) on sale of communities, net	$ (73,850)	$ 0	$ 0
Loss (gain) on facility operating lease termination, net	0	(2,003)	(2,303)
Assets designated as held for sale
Acquisition of assets, net of related payables [Line Items]
Assets held for sale	0	3,612	7,935
Property, plant and equipment and leasehold intangibles, net	0	(3,612)	(7,935)
Net	0	0	0
Healthpeak master lease modification
Acquisition of assets, net of related payables [Line Items]
Property, plant and equipment and leasehold intangibles, net	0	0	(57,462)
Operating lease right-of-use assets	0	0	88,044
Operating lease obligations	0	0	(101,456)
Financing lease obligations	0	0	70,874
Net	0	0	0
Gain on sale for master lease amendment
Acquisition of assets, net of related payables [Line Items]
Property, plant and equipment and leasehold intangibles, net	(220,477)	0	0
Operating lease right-of-use assets	91,641	0	0
Operating lease obligations	(91,641)	0	0
Loss (gain) on sale of communities, net	(73,850)	0	0
Financing lease obligations	294,327	0	0
Net	0	0	0
Lease termination and modification, net
Acquisition of assets, net of related payables [Line Items]
Property, plant and equipment and leasehold intangibles, net	11,098	4,056	10,707
Operating lease right-of-use assets	11,419	17,197	(7,941)
Operating lease obligations	(16,179)	(17,197)	15,126
Financing lease obligations	(6,338)	(4,056)	(15,483)
Other liabilities	0	0	(77)
Loss (gain) on facility operating lease termination, net	0	0	(2,332)
Net	$ 0	$ 0	$ 0