Real Estate and Loans Receivable - Development Activities - Additional Information (Detail) $ in Thousands		12 Months Ended
	Apr. 30, 2015 USD ($) Leases	Dec. 31, 2015 USD ($) RenewalOptions Facility Property	Dec. 31, 2014 USD ($) Facility	May. 05, 2015 USD ($)
Business Acquisition [Line Items]
Current development project		$ 306,500
Ernest [Member] | Rehabilitation Hospital of Northwestern Ohio [Member] | Inpatient Rehabilitation Hospital [Member] | Toledo, OH [Member]
Business Acquisition [Line Items]
Current development project		$ 19,212
Development Activities [Member] | Oakleaf Surgical Hospital [Member] | Acute Care Hospital [Member] | Altoona, WI [Member] | National Surgical Hospitals [Member]
Business Acquisition [Line Items]
Term of lease, years		15 years
Number of lease extension options in current lease contract | RenewalOptions		2
Term of lease extension, years		5 years
Current development project		$ 30,000
Development Activities [Member] | First Choice [Member]
Business Acquisition [Line Items]
Number of facilities leased | Facility			17
Number of property leased | Property		3
Estimated total development cost			$ 83,000
Development Activities [Member] | First Choice [Member] | 2015 Master Lease [Member]
Business Acquisition [Line Items]
Number of facilities leased | Facility		17
Estimated total development cost		$ 102,600
Development Activities [Member] | First Choice [Member] | 2014 Master Lease [Member]
Business Acquisition [Line Items]
Number of facilities leased | Facility		14
Development Activities [Member] | UAB Medical West [Member]
Business Acquisition [Line Items]
Estimated total development cost		$ 8,600
Term of lease, years		15 years
Number of lease extension options in current lease contract | RenewalOptions		4
Term of lease extension, years		5 years
Lease rent increase percentage		2.00%
Development Activities [Member] | Ernest [Member] | Rehabilitation Hospital of Northwestern Ohio [Member] | Inpatient Rehabilitation Hospital [Member] | Toledo, OH [Member]
Business Acquisition [Line Items]
Current development project				$ 19,200
Development Activities [Member] | Adeptus Health [Member]
Business Acquisition [Line Items]
Term of lease extension, years	5 years
Aggregate commitment amount	$ 250,000	$ 500,000
Lease agreement term	15 years
Number of lease extension options | Leases	3
Percentage of increase in annual rent	2.00%
Commitment amount, funded		$ 217,500
Number of facilities completed | Facility		35
Number of facilities under construction | Facility		8
Development Activities [Member] | Northern Utah Rehabilitation Hospital [Member]
Business Acquisition [Line Items]
Estimated total development cost		$ 19,000