Relationship with Universal Health Services, Inc. ("UHS") and Related Party Transactions - Additional Information (Detail)		1 Months Ended		3 Months Ended		12 Months Ended
		Jan. 31, 2022 USD ($) ft²	May 31, 2021 USD ($)	Mar. 31, 2023 USD ($) Hospital Bed Time RenewalOption Property Lease	Mar. 31, 2022 USD ($) Subsidiary	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($) Subsidiary
Related Party Transaction [Line Items]
Number of bed facility | Bed				100
Annual advisory fee as percentage of average invested real estate assets				0.70%	0.70%
Grayson Properties
Related Party Transaction [Line Items]
Minority ownership interest held by a third-party							5.00%
Ownership percentage upon completion of the minority ownership purchase							100.00%
Minority ownership interest							$ 3,100,000
Aiken Regional Medical Center
Related Party Transaction [Line Items]
Monthly lease rent receivable					$ 4,000,000.0
Canyon Creek Behavioral Health
Related Party Transaction [Line Items]
Monthly lease rent receivable					1,800,000
Aiken Regional Medical Center and Canyon Creek Behavioral Health
Related Party Transaction [Line Items]
Fair market value of real estate assets received				$ 83,500,000		$ 83,600,000
Lease expiration date							Dec. 31, 2033
Lease renewal term				5 years
Monthly lease rent receivable					5,800,000
Lease payments expected				$ 1,400,000	1,400,000
Term of lease							12 years
Number of term renewal options | Time				7
Aiken Regional Medical Center and Canyon Creek Behavioral Health | Bonus Rents
Related Party Transaction [Line Items]
Lease revenue				$ 0
Universal Health Services, Inc
Related Party Transaction [Line Items]
Number of acute care hospital leased | Hospital				3
Number of behavioral health care hospital leased | Hospital				3
Number of hospital facilities leased | Hospital				6
Number of medical office buildings and free standing emergency departments | Property				20
Lease revenue	[1]			$ 7,787,000	7,426,000
Option to renew lease, notice period prior to termination date of current term				90 days
Number of ground leases | Lease				13
Aggregate lease payments for 2027				$ 530,099
Aggregate lease payments for thereafter				$ 29,500,000
Percentage ownership of outstanding shares				5.70%		5.70%
Percentage of lease guaranteed				52.00%
Universal Health Services, Inc | Minimum
Related Party Transaction [Line Items]
Remaining lease terms on ground leases				26 years
Universal Health Services, Inc | Maximum
Related Party Transaction [Line Items]
Remaining lease terms on ground leases				75 years
Universal Health Services, Inc | Bonus Rents
Related Party Transaction [Line Items]
Lease revenue	[2]			$ 764,000	$ 678,000
Universal Health Services, Inc | Acute Care Hospitals
Related Party Transaction [Line Items]
Number of hospitals operating lease terms of existing and renewal options | Hospital				3
Universal Health Services, Inc | Wellington Regional Medical Center
Related Party Transaction [Line Items]
Percentage of annual rental increase on cumulative and compound basis				2.50%
Universal Health Services, Inc | Clive, Iowa | Clive Behavioral Health
Related Party Transaction [Line Items]
Initial lease term on property				20 years
Lessee operating lease, existence of option to extend				true
Percentage of annual rental increase on cumulative and compound basis				2.75%
Option to renew lease, notice period prior to termination date of current term				270 days
Renewal option term				10 years
Operating Lease Additional Number Of Renewal Options At Fair Market Value Lease Rates | RenewalOption				2
Renewal options term at fair market value lease rates				10 years
Period to purchase respective leased facilities prior to end of lease term or renewal terms				270 days
Number of term renewal options | Time				5
Number of lease renewal option exercised | Time				3
Universal Health Services, Inc | Clive, Iowa | Clive Behavioral Health | Minimum
Related Party Transaction [Line Items]
Renewal options at fair market value lease rates expiration year				2071
Universal Health Services, Inc | Clive, Iowa | Clive Behavioral Health | Maximum
Related Party Transaction [Line Items]
Renewal options at fair market value lease rates expiration year				2090
Universal Health Services, Inc | Palm Beach, Florida | Wellington Regional Medical Center
Related Party Transaction [Line Items]
Monthly lease rent receivable				$ 6,500,000
Operating lease renewal term				5 years
Universal Health Services, Inc | Subsidiary
Related Party Transaction [Line Items]
Number of wholly-owned subsidiaries | Subsidiary					2
Financing receivable				$ 83,500,000		$ 83,600,000
Universal Health Services, Inc | Asset Purchase and Sale Agreement | Subsidiary
Related Party Transaction [Line Items]
Cash received for sale of real estate asset					$ 4,100,000
Gain on sale of real estate assets							$ 68,400,000
Universal Health Services, Inc | Asset Purchase and Sale Agreement | Subsidiary | Inland Valley Campus of Southwest Healthcare System | Wildomar, California
Related Party Transaction [Line Items]
Fair market value of real estate asset sold					79,600,000
Universal Health Services, Inc | Asset Purchase and Sale Agreement | Subsidiary | Aiken Regional Medical Center | Aiken, South Carolina
Related Party Transaction [Line Items]
Fair market value of real estate assets received					57,700,000
Universal Health Services, Inc | Asset Purchase and Sale Agreement | Subsidiary | Canyon Creek Behavioral Health | Temple, Texas
Related Party Transaction [Line Items]
Fair market value of real estate assets received					26,000,000.0
Universal Health Services, Inc | Asset Purchase and Sale Agreement | Subsidiary | Aiken Regional Medical Center and Canyon Creek Behavioral Health
Related Party Transaction [Line Items]
Number of wholly-owned subsidiaries | Subsidiary							2
Fair market value of real estate assets received					83,700,000
Universal Health Services, Inc | Ground Lease and Master Flex-lease Agreement | Reno, Nevada | Sierra Medical Plaza I
Related Party Transaction [Line Items]
Cost Of Medical Office Building Incurred				22,300,000
Rentable square feet | ft²		86,000
Cost of medical office building		$ 34,600,000		34,600,000
Percentage of rentable square feet		68.00%
Universal Health Services, Inc | Ground Lease and Master Flex-lease Agreement | Reno, Nevada | Sierra Medical Plaza I | Minimum
Related Party Transaction [Line Items]
Initial rent		$ 1,300,000
Fire Mesa Office Building [Member]
Related Party Transaction [Line Items]
Lease expiration date			Aug. 31, 2027
Payment to acquire business			$ 12,900,000
Lease percentage			100.00%
Universal Health Services of Delaware Inc
Related Party Transaction [Line Items]
Advisory fee				1,300,000	1,200,000
Average invested real estate assets				$ 744,000,000	$ 699,000,000
Catholic Health Initiatives Iowa
Related Party Transaction [Line Items]
Percentage of lease guaranteed				48.00%
Customer Concentration Risk | Revenues | Universal Health Services, Inc
Related Party Transaction [Line Items]
Percentage of revenues generated from leases and tenants				26.00%	27.00%
Customer Concentration Risk | Revenues | Universal Health Services, Inc | Tenants
Related Party Transaction [Line Items]
Percentage of revenues generated from leases and tenants				40.00%	41.00%

[1] Includes bonus rental on McAllen Medical Center, a UHS acute care hospital facility of $764 and $678 for the three-month periods ended March 31, 2023 and 2022, respectively.

[2] Includes bonus rental on McAllen Medical Center, a UHS acute care hospital facility of $764 and $678 for the three-month periods ended March 31, 2023 and 2022, respectively.