Real Estate and Lending Activities - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended		3 Months Ended	6 Months Ended			1 Months Ended	6 Months Ended	9 Months Ended	6 Months Ended	3 Months Ended		6 Months Ended				3 Months Ended		6 Months Ended		12 Months Ended				6 Months Ended						1 Months Ended	3 Months Ended	1 Months Ended	6 Months Ended		3 Months Ended		6 Months Ended		12 Months Ended	1 Months Ended
	Jun. 11, 2013 Hospital Y RenewalOptions Bed	Mar. 31, 2012	Jun. 30, 2013 Contract	Jun. 30, 2013 Y Contract	May 04, 2013 Bed	Jun. 30, 2013 Letter of Credit	Oct. 14, 2011 Emerus Holding, Inc. and Baptist Health System JV Hospital	Jun. 30, 2013 Emerus Holding, Inc. and Baptist Health System JV Y Property Contract	Dec. 31, 2012 Emerus Holding, Inc. and Baptist Health System JV Property	Jun. 30, 2013 Twelve Oaks Facility	Jun. 30, 2013 Texas	Jun. 30, 2013 California	Jun. 30, 2013 Minimum	Jun. 30, 2013 Minimum Emerus Holding, Inc. and Baptist Health System JV	Jun. 30, 2013 Maximum	Jun. 30, 2013 Maximum Emerus Holding, Inc. and Baptist Health System JV	Jun. 30, 2013 Ernest	Jun. 30, 2012 Ernest	Jun. 30, 2013 Ernest	Jun. 30, 2012 Ernest	Dec. 31, 2012 Ernest	Jun. 13, 2013 Ernest Bed	Feb. 29, 2012 Ernest	Jun. 30, 2013 Ernest Key Management Personnel	Jun. 30, 2013 Ernest Minimum	Jun. 30, 2013 Rehabilitation Hospital Facility	Jun. 30, 2013 Acute Care Facility Facility State	Jun. 30, 2013 Monroe Hospital D	Jun. 30, 2010 Monroe Hospital	Jun. 11, 2013 First Choice Room	May 20, 2013 Rehabilitation Facility in South Ogden	Jun. 30, 2013 Rehabilitation Facility in South Ogden	Mar. 04, 2013 Rehabilitation Facility in Post Falls, Idaho	Jun. 30, 2013 Rehabilitation Facility in Post Falls, Idaho	Mar. 31, 2012 Florence acute care facility	Jun. 30, 2013 Prime Health Care Services	Jun. 30, 2012 Prime Health Care Services	Jun. 30, 2013 Prime Health Care Services	Jun. 30, 2012 Prime Health Care Services	Dec. 31, 2012 Prime Health Care Services	Jun. 15, 2012 HealthSouth Rehabilitation Hospital of Fayetteville	Apr. 30, 2013 Health South Rehabilitation Hospital Of Southeast Arizona and Southeast Texas Hospital
Significant Acquisitions and Disposals [Line Items]
Number of facilities acquired	2																									5	7
Purchase price of acquisition	$ 75.0																$ 96.5		$ 96.5
Term of lease	10			20				15
Number of lease extension options in current lease contract	2		3	3				3
Term of lease extension, years	5 years			5 years				5 years
Percentage of rental rate	2.00%			9.00%									2.00%		5.00%
Combined purchase price and investment amount																							396.5
Number of states																											7
Aggregate purchase price				200
Loan secured by mortgage interest			100	100
Acquisition loan made																	93.2		93.2
Capital contribution																								3.3
Interest rate on acquisition loan																			15.00%
Coupon payable in cash, year one																									6.00%
Coupon payable in cash, year two																									7.00%
Coupon payable in cash in, thereafter																			10.00%
Agreement terms																			Although there are provisions in the loan agreement that are expected to result in full payment of the 15% preference when funds are sufficient. Any of the 15% in excess of the minimum that is not paid may be accrued and paid upon the occurrence of a capital or liquidity event and is payable at maturity
Number of freestanding emergency room facility																														25
Estimated total development cost, funded																			12.3											100.0		2.7		4.9
Estimated cost of the new facility				9.4																											19.2		14.4
Facility partially occupied date										Jan. 23, 2013
Percentage of facility partially occupied										55.00%
Lease agreement										15 years
Number of beds					26																	40
Cost incurred in new facility			7.9	7.9																		15.0
Total development cost																			18
Number of leased hospital							3
Business acquisition cost of acquired entity							30.0																												30.0
Rent escalations percentage														1.00%		3.00%
Number of properties completed								2	1
Sale of real estate																																									16.0	18.5
Gain (loss) on sale of real estate																																									(1.4)	2.1
Number of hospitals sold																																										2
Lease advance																												29.9
Operating leases rent, interest and other charges outstanding																												21.0
Interest receivables																												6.0
Impairment of working capital loan recognized																													12
Straight line rent receivables write-off																													2.5
Number of days past due																												90
Net investment to maximum exposure																												39
Impairment of working capital loan estimation-patient receivables considered for first priority secured interest																												5
Impairment of working capital loan estimation-cash balance considered for first priority secured interest																												0.6
Rent receivables			0.4	0.4
Letter of credit outstanding						1.2
Amount of convertible note converted into equity interest		1.7
Convertible note		5.0
Percentage of equity shares from convertible debt		9.90%	15.10%
Remaining convertible debt after conversion of part of debt			$ 3.3	$ 3.3
Percentage of entity revenue from affiliates																	20.30%	22.80%	20.30%	16.80%																32.30%	22.40%	31.70%	24.40%
Percentage of total assets accounted											23.40%	23.20%					18.40%				18.20%															30.30%				27.90%
Maximum percentage of entity's total assets invested on single property			5.00%	5.00%