Summary of Outstanding Mortgages, Excluding Net Debt Premium (Detail) - USD ($) $ in Thousands		9 Months Ended
		Sep. 30, 2016		Dec. 31, 2015
Debt Instrument [Line Items]
Outstanding Balance		$ 107,849	[1]	$ 110,300
Summerlin Hospital Medical Office Building III floating rate mortgage loan
Debt Instrument [Line Items]
Outstanding Balance	[1],[2]	$ 10,462
Debt Instrument Interest Rate Stated Percentage	[2]	3.77%
Maturity Date	[2]	2016-12
Peace Health fixed rate mortgage loan
Debt Instrument [Line Items]
Outstanding Balance	[1],[2]	$ 20,434
Debt Instrument Interest Rate Stated Percentage	[2]	5.64%
Maturity Date	[2]	2017-04
Auburn Medical II floating rate mortgage loan
Debt Instrument [Line Items]
Outstanding Balance	[1],[2]	$ 6,783
Debt Instrument Interest Rate Stated Percentage	[2]	3.27%
Maturity Date	[2]	2017-04
Medical Center of Western Connecticut fixed rate mortgage loan
Debt Instrument [Line Items]
Outstanding Balance	[1],[2]	$ 4,568
Debt Instrument Interest Rate Stated Percentage	[2]	6.00%
Maturity Date	[2]	2017-06
Summerlin Hospital Medical Office Building II fixed rate mortgage loan
Debt Instrument [Line Items]
Outstanding Balance	[1]	$ 11,175
Debt Instrument Interest Rate Stated Percentage		5.50%
Maturity Date		2017-10
Phoenix Children's East Valley Care Center Fixed Rate Mortgage Loan
Debt Instrument [Line Items]
Outstanding Balance	[1]	$ 6,239
Debt Instrument Interest Rate Stated Percentage		5.88%
Maturity Date		2017-12
Centennial Hills Medical Office Building floating rate mortgage loan
Debt Instrument [Line Items]
Outstanding Balance	[1]	$ 10,116
Debt Instrument Interest Rate Stated Percentage		3.77%
Maturity Date		2018-01
Sparks Medical Building/Vista Medical Terrace Floating Rate Mortgage Loan
Debt Instrument [Line Items]
Outstanding Balance	[1]	$ 4,260
Debt Instrument Interest Rate Stated Percentage		3.77%
Maturity Date		2018-02
Rosenberg Children's Medical Plaza Fixed Rate Mortgage Loan
Debt Instrument [Line Items]
Outstanding Balance	[1]	$ 8,190
Debt Instrument Interest Rate Stated Percentage		4.85%
Maturity Date		2018-05
Vibra Hospital-Corpus Christi fixed rate mortgage loan
Debt Instrument [Line Items]
Outstanding Balance	[1]	$ 2,746
Debt Instrument Interest Rate Stated Percentage		6.50%
Maturity Date		2019-07
700 Shadow Lane and Goldring MOBs fixed rate mortgage loan
Debt Instrument [Line Items]
Outstanding Balance	[1]	$ 6,294
Debt Instrument Interest Rate Stated Percentage		4.54%
Maturity Date		2022-06
BRB Medical Office Building fixed rate mortgage loan
Debt Instrument [Line Items]
Outstanding Balance	[1]	$ 6,362
Debt Instrument Interest Rate Stated Percentage		4.27%
Maturity Date		2022-12
Desert Valley Medical Center Floating Rate Mortgage Loan
Debt Instrument [Line Items]
Outstanding Balance	[1]	$ 5,114
Debt Instrument Interest Rate Stated Percentage		3.62%
Maturity Date		2023-01
Tuscan Professional Building fixed rate mortgage loan
Debt Instrument [Line Items]
Outstanding Balance	[1]	$ 5,106
Debt Instrument Interest Rate Stated Percentage		5.56%
Maturity Date		2025-06

[1] All mortgage loans require monthly principal payments through maturity and either fully amortize or include a balloon principal payment upon maturity.

[2] This loan is scheduled to mature within the next twelve months, at which time we will decide whether to refinance pursuant to a new mortgage loan or by utilizing borrowings under our Credit Agreement.