Summary of Details of Hospitals Leased from Trust (Detail) - USD ($)		3 Months Ended
		Mar. 31, 2022	Mar. 31, 2021
Property Subject to or Available for Operating Lease [Line Items]
Lease and rental expense		$ 32,038,000	$ 31,324,000
McAllen Medical Center
Property Subject to or Available for Operating Lease [Line Items]
Lease and rental expense		$ 5,485,000
End of Lease Term		2026-12
Renewal Term (years)	[1]	5 years
Wellington Regional Medical Center
Property Subject to or Available for Operating Lease [Line Items]
Lease and rental expense		$ 6,319,000
End of Lease Term		2026-12
Renewal Term (years)	[2]	5 years
Aiken Regional Medical Center/Aurora Pavilion Behavioral Health Services
Property Subject to or Available for Operating Lease [Line Items]
Lease and rental expense		$ 3,895,000
End of Lease Term		2033-12
Renewal Term (years)		35 years
Canyon Creek Behavioral Health
Property Subject to or Available for Operating Lease [Line Items]
Lease and rental expense		$ 1,670,000
End of Lease Term		2033-12
Renewal Term (years)		35 years
Clive Behavioral Health Hospital
Property Subject to or Available for Operating Lease [Line Items]
Lease and rental expense		$ 2,628,000
End of Lease Term		2040-12
Renewal Term (years)		50 years

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

[2] We have one 5-year renewal options 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