Summary of Details of Hospitals Leased from Trust (Detail) - USD ($)			12 Months Ended
		Jan. 01, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Property Subject to or Available for Operating Lease [Line Items]
Annual Minimum Rent			$ 118,863,000	$ 116,059,000	$ 107,809,000
Subsequent Event | McAllen Medical Center
Property Subject to or Available for Operating Lease [Line Items]
Annual Minimum Rent		$ 5,485,000
End of Lease Term		2026-12
Renewal Term (years)	[1]	5 years
Subsequent Event | Wellington Regional Medical Center
Property Subject to or Available for Operating Lease [Line Items]
Annual Minimum Rent		$ 6,319,000
End of Lease Term		2026-12
Renewal Term (years)	[2]	5 years
Subsequent Event | Aiken Regional Medical Center/Aurora Pavilion Behavioral Health Services
Property Subject to or Available for Operating Lease [Line Items]
Annual Minimum Rent		$ 3,895,000
End of Lease Term		2033-12
Renewal Term (years)	[3]	35 years
Subsequent Event | Canyon Creek Behavioral Health
Property Subject to or Available for Operating Lease [Line Items]
Annual Minimum Rent		$ 1,670,000
End of Lease Term		2033-12
Renewal Term (years)	[3]	35 years
Subsequent Event | Clive Behavioral Health Hospital
Property Subject to or Available for Operating Lease [Line Items]
Annual Minimum Rent		$ 2,628,000
End of Lease Term		2040-12
Renewal Term (years)	[4]	50 years

[1] We have one 5-year renewal option at existing lease rates (through 2031).

[2] We have one 5-year renewal option at fair market value lease rates (through 2031).  Upon the December 31, 2021 expiration of the lease on Wellington Regional Medical Center, a wholly-owned subsidiary of ours exercised its fair market value renewal option and renewed the lease for a 5-year term scheduled to expire on December 31, 2026.  Effective January 1, 2022, the annual fair market value lease rate for this hospital is $6.3 million (there is no longer a bonus rental component of the lease payment). Beginning on January 1, 2023, and thereafter on each January 1^st through 2026, the annual rent will increase by 2.50% on a cumulative and compounded basis.

[3] We have seven 5-year renewal options at fair market value lease rates (2034 through 2068).

[4] This facility is operated by a joint venture in which we are the managing, majority member and an unrelated third-party holds a minority ownership interest. The joint venture has three, 10-year renewal options at computed lease rates as stipulated in the lease (2041 through 2070) and two additional, 10-year renewal options at fair market values lease rates (2071 through 2090). Beginning in January, 2022, and thereafter in each January through 2040 (and potentially through 2070 if three, 10-year renewal options are exercised), the annual rental will increase by 2.75% on a cumulative and compounded basis.