Lease Accounting - Additional Information (Detail)		3 Months Ended			9 Months Ended		12 Months Ended
		Sep. 30, 2022 USD ($)	Mar. 31, 2022 USD ($) Subsidiary	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) Property Subsidiary Lease Land	Sep. 30, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Leases Disclosure [Line Items]
Number of properties | Property					2
Lessee in connection with ground leases for land | Land					14
Right-of-use land assets		$ 11,467,000			$ 11,467,000			$ 11,495,000
Ground lease liabilities		11,467,000			11,467,000			11,495,000
Aiken Regional Medical Center and Canyon Creek Behavioral Health
Leases Disclosure [Line Items]
Fair market value of real estate assets received					83,700,000			82,400,000
Monthly lease rent receivable			$ 5,700,000
Aiken Regional Medical Center and Canyon Creek Behavioral Health | Forecast
Leases Disclosure [Line Items]
Lease payments expected							$ 5,500,000
Aiken Regional Medical Center
Leases Disclosure [Line Items]
Monthly lease rent receivable			3,900,000
Canyon Creek Behavioral Health
Leases Disclosure [Line Items]
Monthly lease rent receivable			$ 1,800,000
Universal Health Services Inc
Leases Disclosure [Line Items]
Lease revenue	[1]	7,471,000		$ 7,574,000	$ 22,291,000	$ 21,971,000
Universal Health Services Inc | Subsidiary
Leases Disclosure [Line Items]
Number of wholly-owned subsidiaries | Subsidiary			2
Asset Purchase and Sale Agreement | Universal Health Services Inc | Subsidiary | Aiken Regional Medical Center and Canyon Creek Behavioral Health
Leases Disclosure [Line Items]
Number of wholly-owned subsidiaries | Subsidiary					2
Fair market value of real estate assets received			$ 83,700,000
Kindred Chicago Central Hospital Central Chicago, Illinois
Leases Disclosure [Line Items]
Number of lease property | Lease					2
Chicago, Illinois
Leases Disclosure [Line Items]
Lease expiration date					Dec. 31, 2021
Lease revenue		240,000		$ 390,000	$ 1,100,000	$ 1,200,000		$ 1,600,000
Evansville Rehabilitation Hospital Evansville, Indiana
Leases Disclosure [Line Items]
Lease expiration date					May 31, 2019
Estimate operating expenses, remainder of fiscal year		900,000			$ 900,000
Corpus Christi Corpus Christi Texas
Leases Disclosure [Line Items]
Lease expiration date					Jun. 01, 2019
Estimate operating expenses, remainder of fiscal year		$ 900,000			$ 900,000

[1] Includes bonus rental on McAllen Medical Center, a UHS acute care hospital facility of $727 and $2,048 for the three and nine-month periods ended September 30, 2022, respectively, and includes bonus rental on three UHS acute care hospital facilities of $1,828 and $5,171 for the three and nine-month periods ended September 30, 2021, respectively