Debt and Debt Held for Sale - Schedule of Company's Outstanding Debt (Parenthetical) (Detail)					12 Months Ended
		Nov. 09, 2021	Aug. 31, 2018	Feb. 23, 2018 Property	Dec. 31, 2024 Loan
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				3	3
Number of senior housing properties acquired					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
KeyBank Bridge Loans [Member]
Debt Instrument [Line Items]
Maturity Date		Apr. 30, 2023

[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 beginning March 2020.

[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 beginning September 2022.