Real Estate and Lending Activities - Development Activities - Additional Information (Detail) (USD $)		9 Months Ended	0 Months Ended	9 Months Ended			0 Months Ended
	Sep. 30, 2014	Sep. 30, 2014 Oakleaf Surgical Hospital [Member] Acute Care Hospital [Member] Altoona, WI [Member] National Surgical Hospitals [Member] RenewalOptions	Aug. 15, 2014 Healthcare [Member] RenewalOptions	Sep. 30, 2014 Development Activities [Member] Twelve Oaks Facility [Member]	Sep. 30, 2014 Development Activities [Member] Northern Utah Rehabilitation Hospital [Member]	Sep. 30, 2014 Development Activities [Member] First Choice ER. [Member] Facility	Jul. 29, 2014 Development Activities [Member] First Choice ER. [Member] Minimum [Member]	Jul. 29, 2014 Development Activities [Member] Adeptus Health [Member]
Significant Acquisitions and Disposals [Line Items]
Estimated total development cost					$ 19,000,000	$ 73,700,000
Current development project	164,025,000	30,500,000
Term of lease, years		15 years	15 years
Number of lease extension options in current lease contract		2	4
Term of lease extension, years		5 years	5 years
Number of facilities leased						16
Agreement amount related to acquisition			8,700,000
Business acquisition, cost of acquired entity								$ 150,000,000
Sale/leaseback transaction, initial term period								15 years
Sale/leaseback transaction, additional term period								5 years
Number of facilities under construction						1
Percentage increase in consumer price index							2.00%
Percentage of facility partially occupied				55.00%
Lease agreement				15 years