Acquisitions and Divestitures - Additional Information (Detail) $ in Millions	1 Months Ended		3 Months Ended	9 Months Ended
	Mar. 31, 2022 USD ($) ft²	Jan. 31, 2022 USD ($) ft² Time Tenant	Mar. 31, 2023 USD ($) Acquisition Disposition	Sep. 30, 2022 Disposition
Business Acquisitions And Dispositions [Line Items]
Number of acquisitions | Acquisition			0
Number of dispositions | Disposition			0	0
Beaumont Heart And Vascular Center | Dearborn Michigan
Business Acquisitions And Dispositions [Line Items]
Lease expiration date	Nov. 30, 2026
Lease commencing date	Dec. 01, 2022
Percentage of lease escalations	2.5
Payment to acquire business	$ 5.4
Percentage of lease	100.00%
Rentable square feet | ft²	17,621
140 Thomas Johnson Drive Medical Office Building | Frederick, Maryland
Business Acquisitions And Dispositions [Line Items]
Payment to acquire business		$ 8.0
Percentage of lease		100.00%
Number of tenants | Tenant		3
Percentage of rentable square feet		72.00%
Rentable square feet | ft²		20,146
Double net lease agreement period		15 years
Initial lease terms		14 years
Number of term renewal options | Time		3
Renewal Term (years)		5 years
Sierra Medical Plaza I | Reno, Nevada | Ground Lease and Master Flex-lease Agreement | Universal Health Services, Inc
Business Acquisitions And Dispositions [Line Items]
Percentage of rentable square feet		68.00%
Rentable square feet | ft²		86,000
Cost of medical office building		$ 34.6	$ 34.6
Cost Of Medical Office Building Incurred			$ 22.3
Sierra Medical Plaza I | Reno, Nevada | Ground Lease and Master Flex-lease Agreement | Universal Health Services, Inc | Minimum [Member]
Business Acquisitions And Dispositions [Line Items]
Initial rent		$ 1.3