Organization and Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2024 USD ($) Property	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Feb. 26, 2025 Property State
Significant Accounting Policies [Line Items]
Net intangible assets	$ 7,325,000	$ 9,110,000
Intangible assets, accumulated amortization	$ 11,300,000	12,500,000
Intangible assets amortized over weighted average remaining lease term	55 years 3 months 18 days
Depreciation expense	$ 24,500,000	24,600,000	$ 23,300,000
Federal excise tax rate when amount of 85% of ordinary income plus 95% of any capital gain income exceeds cash distributions	4.00%
Gross cost basis of properties for federal income tax purposes (Unaudited)	$ 726,000,000	710,000,000
Net book value of the properties for federal income tax purposes (Unaudited)	$ 421,000,000	422,000,000
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	Chief Executive Officer and President [Member]
Aiken Regional Medical Center and Canyon Creek Behavioral Health
Significant Accounting Policies [Line Items]
Initial lease term on property	12 years
Fair market value of real estate assets received	$ 82,800,000	83,300,000
Minimum
Significant Accounting Policies [Line Items]
Percentage of annual REIT taxable income that should be distributed to remain exempt from federal income taxes	90.00%
Minimum | 4 Unconsolidated Limited Liability Companies / Limited Partner
Significant Accounting Policies [Line Items]
Non-controlling equity interest, ownership percentage	33.00%
Maximum | 4 Unconsolidated Limited Liability Companies / Limited Partner
Significant Accounting Policies [Line Items]
Non-controlling equity interest, ownership percentage	95.00%
Buildings | Minimum
Significant Accounting Policies [Line Items]
Estimated original useful lives of property plant and equipment	25 years
Buildings | Maximum
Significant Accounting Policies [Line Items]
Estimated original useful lives of property plant and equipment	45 years
Capital Improvements | Minimum
Significant Accounting Policies [Line Items]
Estimated original useful lives of property plant and equipment	3 years
Capital Improvements | Maximum
Significant Accounting Policies [Line Items]
Estimated original useful lives of property plant and equipment	35 years
In Place Leases
Significant Accounting Policies [Line Items]
Net intangible assets	$ 6,100,000
Intangible assets, accumulated amortization	$ 9,800,000
Intangible assets amortized over weighted average remaining lease term	4 years 7 months 6 days
Intangible assets, estimated aggregate amortization expenses for 2025	$ 1,500,000
Intangible assets, estimated aggregate amortization expenses for 2026	1,300,000
Intangible assets, estimated aggregate amortization expenses for 2027	1,000,000
Intangible assets, estimated aggregate amortization expenses for 2028	568,000
Intangible assets, estimated aggregate amortization expenses for 2029 and thereafter	1,800,000
Amortization expense, intangible assets	1,600,000	1,900,000	2,100,000
Above-Market Leases
Significant Accounting Policies [Line Items]
Net intangible assets	991,000
Intangible assets, accumulated amortization	$ 1,400,000
Intangible assets amortized over weighted average remaining lease term	4 years 7 months 6 days
Intangible assets, estimated aggregate amortization expenses for 2025	$ 215,000
Intangible assets, estimated aggregate amortization expenses for 2026	209,000
Intangible assets, estimated aggregate amortization expenses for 2027	197,000
Intangible assets, estimated aggregate amortization expenses for 2028	137,000
Intangible assets, estimated aggregate amortization expenses for 2029 and thereafter	233,000
Amortization expense, intangible assets	$ 215,000	$ 246,000	$ 247,000
McAllen Medical Center | Customer Concentration Risk | Revenues
Significant Accounting Policies [Line Items]
Percentage of rental revenue	9.00%	9.00%	9.00%
Medical office buildings | Limited Liability Companies
Significant Accounting Policies [Line Items]
Number of real estate investments | Property	4
Subsequent Event
Significant Accounting Policies [Line Items]
Number of real estate investments | Property				76
Number of states that real estate investments are located | State				21
Subsequent Event | Hospitals
Significant Accounting Policies [Line Items]
Number of real estate investments | Property				6
Subsequent Event | Hospitals | Acute Care
Significant Accounting Policies [Line Items]
Number of real estate investments | Property				3
Subsequent Event | Hospitals | Behavioral health
Significant Accounting Policies [Line Items]
Number of real estate investments | Property				3
Subsequent Event | Mission and Weslaco Freestanding Emergency Departments
Significant Accounting Policies [Line Items]
Number of real estate investments | Property				4
Subsequent Event | Medical office buildings | Limited Liability Companies ("LLCs")/ Limited Liability Partnerships ("LPs")
Significant Accounting Policies [Line Items]
Number of real estate investments | Property				4
Subsequent Event | Preschool and childcare Centers
Significant Accounting Policies [Line Items]
Number of real estate investments | Property				4