Remaining Renewal Options and Terms for Hospital Facilities Leased from Trust (Parenthetical) (Detail)	3 Months Ended
Mar. 31, 2015 RenewalOptions
McAllen Medical Center
Property Subject to or Available for Operating Lease [Line Items]
Number of renewal options at existing lease rates	3
Renewal options term at existing lease rates	5 years
Wellington Regional 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
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
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
Number of renewal options at fair market lease rates	2
Renewal options term at fair market lease rates	5 years
Maximum \| McAllen Medical Center
Property Subject to or Available for Operating Lease [Line Items]
Renewal options at existing lease rates expiration year	2031
Maximum \| Wellington Regional Medical Center
Property Subject to or Available for Operating Lease [Line Items]
Renewal options at existing lease rates expiration year	2021
Renewal options at fair market value lease rates expiration year	2031
Maximum \| Southwest Healthcare System, Inland Valley Campus
Property Subject to or Available for Operating Lease [Line Items]
Renewal options at existing lease rates expiration year	2021
Renewal options at fair market value lease rates expiration year	2031
Minimum \| Wellington Regional Medical Center
Property Subject to or Available for Operating Lease [Line Items]
Renewal options at fair market value lease rates expiration year	2022
Minimum \| Southwest Healthcare System, Inland Valley Campus
Property Subject to or Available for Operating Lease [Line Items]
Renewal options at fair market value lease rates expiration year	2022

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