REAL ESTATE PROPERTIES HELD FOR INVESTMENT - Schedule of Real Estate Properties Held for Investment (Details) $ in Thousands	Sep. 30, 2015 USD ($) Bed Facilitiy	Dec. 31, 2014 USD ($) Bed Facilitiy
Real Estate Properties [Line Items]
Building and improvements	$ 1,883,710	$ 1,551,548
Furniture and equipment	97,579	82,812
Land improvements	3,646	3,646
Land	216,400	193,793
Total Real Estate at Cost	2,201,335	1,831,799
Accumulated Depreciation	(226,662)	(185,994)
Total Real Estate Investments, Net	$ 1,974,673	$ 1,645,805
Operating Segments [Member]
Real Estate Properties [Line Items]
Number of Properties | Facilitiy	178	160
Number of Beds/Units | Bed	18,005	16,718
Total Real Estate at Cost	$ 2,201,059	$ 1,831,534
Accumulated Depreciation	(226,416)	(185,789)
Total Real Estate Investments, Net	$ 1,974,643	$ 1,645,745
Skilled Nursing/Transitional Care Facilities [Member]
Real Estate Properties [Line Items]
Number of Properties | Facilitiy	103	103
Number of Beds/Units | Bed	11,400	11,336
Total Real Estate at Cost	$ 1,007,325	$ 851,252
Accumulated Depreciation	(171,379)	(151,978)
Total Real Estate Investments, Net	$ 835,946	$ 699,274
Senior Housing [Member]
Real Estate Properties [Line Items]
Number of Properties | Facilitiy	73	55
Number of Beds/Units | Bed	6,481	5,258
Total Real Estate at Cost	$ 1,017,927	$ 804,475
Accumulated Depreciation	(39,361)	(22,487)
Total Real Estate Investments, Net	$ 978,566	$ 781,988
Acute Care Hospital [Member]
Real Estate Properties [Line Items]
Number of Properties | Facilitiy	2	2
Number of Beds/Units | Bed	124	124
Total Real Estate at Cost	$ 175,807	$ 175,807
Accumulated Depreciation	(15,676)	(11,324)
Total Real Estate Investments, Net	160,131	164,483
Corporate [Member]
Real Estate Properties [Line Items]
Total Real Estate at Cost	276	265
Accumulated Depreciation	(246)	(205)
Total Real Estate Investments, Net	$ 30	$ 60