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Summary of Significant Accounting Policies - Narrative (Detail) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($) seniorHousingCommunity property	Jun. 30, 2024 property	Jun. 30, 2025 USD ($) seniorHousingCommunity property segment	Jun. 30, 2024 USD ($) property	Dec. 31, 2024 USD ($)
Accounting Policies [Line Items]
Long-lived asset impairment | $			$ 0.0	$ 0.0
Termination notice period			30 days
Contract with customer, liability, revenue recognized | $			$ 5.2	$ 3.9
Resident receivables due period			30 days
Allowance for doubtful accounts | $	$ 8.8		$ 8.8		$ 7.9
Number of senior housing communities | seniorHousingCommunity	96		96
Cash from employee retention credit payment | $	$ 8.8
Percentage of voting rights	0.50		0.50		0.50
Number of reportable segments | segment			1
Number of operating segments | segment			1
Properties | Geographic Concentration Risk | Texas
Accounting Policies [Line Items]
Concentration risk percentage	22.00%	23.00%	22.00%	23.00%
Number of senior housing communities | property	19	16	19	16
Properties | Geographic Concentration Risk | Indiana
Accounting Policies [Line Items]
Concentration risk percentage	13.00%	18.00%	13.00%	18.00%
Number of senior housing communities | property	12	12	12	12
Properties | Geographic Concentration Risk | Ohio
Accounting Policies [Line Items]
Concentration risk percentage	18.00%	21.00%	18.00%	20.00%
Number of senior housing communities | property	12	11	12	11
Properties | Geographic Concentration Risk | FLORIDA
Accounting Policies [Line Items]
Concentration risk percentage	10.00%		9.00%
Number of senior housing communities | property	8		8
Properties | Geographic Concentration Risk | Wisconsin
Accounting Policies [Line Items]
Concentration risk percentage		10.00%		10.00%
Number of senior housing communities | property		8		8
Housing And Support Services
Accounting Policies [Line Items]
Contract liabilities for deferred fees paid | $	$ 6.6		$ 6.6		$ 5.4
Managed community reimbursement revenue | Revenue Benchmark | Customer Concentration Risk
Accounting Policies [Line Items]
Concentration risk percentage	7.80%	11.10%
Medicaid Program Revenue | Revenue Benchmark | Customer Concentration Risk
Accounting Policies [Line Items]
Concentration risk percentage			8.10%	11.30%

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