Supplemental Disclosure of Cash Flow Information - Narrative (Details) $ in Thousands		6 Months Ended		12 Months Ended		18 Months Ended
	May 01, 2023 USD ($) community	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jun. 30, 2023 community
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of communities acquired | community						1
Number of equity interest communities acquired | community						1
Proceeds from sale of assets, net		$ 43,059	$ 5,739
Net gain on sale of communities		37,156	667
Employee retention credit, amount received		$ 13,900	$ 1,200
One Acquired Community
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage		50.00%				50.00%
CARES Act
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Employee retention credit, amount recognized				$ 9,400	$ 9,900
Employee retention credit, amount received		$ 18,500
CARES Act | Prepaid Expenses and Other Current Assets
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Employee related liabilities		$ 800
Disposal Group, Disposed of by Sale, Not Discontinued Operations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of communities disposed of | community						3
Communities Disposed of Through Lease Terminations
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of communities disposed of | community						4
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations | CCRCs Segment
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of entry fee communities sold | community	1
Proceeds from sale of assets, net	$ 12,500
Disposal Group, Held-for-sale or Disposed of by Sale, Not Discontinued Operations | CCRCs Segment | Secured Debt | Mortgages
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Repayments of secured debt	29,600
Net gain on sale of communities	$ 36,300