Remaining Renewal Options and Terms for Hospital Facilities Leased from Trust (Parenthetical) (Detail)	12 Months Ended
	Dec. 31, 2019 RenewalOption
McAllen Medical Center
Property Subject to or Available for Operating Lease [Line Items]
Number of renewal options at existing lease rates	1
Renewal options term at existing lease rates	5 years
McAllen Medical Center | Maximum
Property Subject to or Available for Operating Lease [Line Items]
Renewal options at existing lease rates expiration year	2031
Wellington Regional Medical Center
Property Subject to or Available for Operating Lease [Line Items]
Number of renewal options at fair market lease rates	2
Renewal options term at fair market lease rates	5 years
Wellington Regional Medical Center | Maximum
Property Subject to or Available for Operating Lease [Line Items]
Renewal options at fair market value lease rates expiration year	2031
Wellington Regional Medical Center | Minimum
Property Subject to or Available for Operating Lease [Line Items]
Renewal options at fair market value lease rates expiration year	2022
Southwest Healthcare System, Inland Valley Campus
Property Subject to or Available for Operating Lease [Line Items]
Number of renewal options at fair market lease rates	2
Renewal options term at fair market lease rates	5 years
Southwest Healthcare System, Inland Valley Campus | Maximum
Property Subject to or Available for Operating Lease [Line Items]
Renewal options at fair market value lease rates expiration year	2031
Southwest Healthcare System, Inland Valley Campus | Minimum
Property Subject to or Available for Operating Lease [Line Items]
Renewal options at fair market value lease rates expiration year	2022