Debt - Schedule of Company's Outstanding Debt (Parenthetical) (Detail)				3 Months Ended
		Aug. 31, 2018	Feb. 23, 2018 Loan	Mar. 31, 2023 USD ($) Loan Property	Mar. 31, 2022 USD ($)
Debt Instrument [Line Items]
Repayment of loan | $				$ 150,000	$ 17,000,000
Freddie Mac Utah Loans [Member]
Debt Instrument [Line Items]
Debt instrument, interest payment period			2 years	2 years
Amortization period			30 years	30 years
Number of mortgage loans | Loan			3	3
Number of senior housing properties acquired | Property				3
Maturity Date	[1]			Feb. 23, 2028
Freddie Mac Courtyard Loan [Member]
Debt Instrument [Line Items]
Debt instrument, interest payment period		4 years		4 years
Amortization period		30 years		30 years
Maturity Date	[2]			Sep. 01, 2028

[1] Represents the aggregate of three separate mortgage loans for the three senior housing properties acquired in Utah. Fixed rate debt with interest only payments due monthly for the first two years, then principal and interest on a 30-year amortization schedule thereafter.

[2] Fixed rate debt with interest only payments due monthly for the first four years, then principal and interest on a 30-year amortization schedule thereafter.