Summary of Outstanding Mortgages, Excluding Net Debt Premium (Detail) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2024	Dec. 31, 2023
Debt Instrument [Line Items]
Total mortgages notes payable, non-recourse to us, net		$ 19,970	$ 32,863
Nonrecourse
Debt Instrument [Line Items]
Outstanding Balance	[1]	20,144
Less net financing fees	[1]	(174)
Total mortgages notes payable, non-recourse to us, net	[1]	19,970
Tuscan Professional Building Fixed Rate Mortgage Loan | Nonrecourse
Debt Instrument [Line Items]
Outstanding Balance	[1],[2]	$ 717
Interest Rate	[2]	5.56%
Maturity Date	[2]	2025-06
Phoenix Children East Valley Care Center Fixed Rate Mortgage Loan | Nonrecourse
Debt Instrument [Line Items]
Outstanding Balance	[1]	$ 7,789
Interest Rate		3.95%
Maturity Date		2030-01
Rosenberg Children's Medical Plaza Fixed Rate Mortgage Loan | Nonrecourse
Debt Instrument [Line Items]
Outstanding Balance	[1]	$ 11,638
Interest Rate		4.42%
Maturity Date		2033-09

[1] All mortgage loans require monthly principal payments through maturity and either fully amortize or include a balloon principal payment upon maturity.

[2] This loan is scheduled to mature within the next twelve months, at which time we will either refinance pursuant to a new mortgage loan or repay the mortgage balance in full utilizing borrowings under our Credit Agreement.