REAL ESTATE PROPERTIES HELD FOR INVESTMENT - Schedule of Real Estate Properties Held for Investment (Details) $ in Thousands		3 Months Ended
	Mar. 01, 2017 Property	Mar. 31, 2017 USD ($) Bed Property Facilitiy	Dec. 31, 2016 USD ($) Bed Facilitiy
Real Estate Properties [Line Items]
Building and improvements		$ 1,981,783	$ 1,983,769
Furniture and equipment		85,622	85,196
Land improvements		3,475	3,744
Land		220,117	220,042
Total Real Estate at Cost		2,290,997	2,292,751
Accumulated Depreciation		(297,405)	(282,812)
Total Real Estate Investments, Net		$ 1,993,592	$ 2,009,939
Facilities transitioned to managed property structure | Property	8	8
Operating Segments [Member]
Real Estate Properties [Line Items]
Number of Properties | Facilitiy		182	183
Number of Beds/Units | Bed		18,756	18,878
Total Real Estate at Cost		$ 2,290,590	$ 2,292,345
Accumulated Depreciation		(297,143)	(282,556)
Total Real Estate Investments, Net		$ 1,993,447	$ 2,009,789
Operating Segments [Member] | Skilled Nursing/Transitional Care Facilities [Member]
Real Estate Properties [Line Items]
Number of Properties | Facilitiy		96	97
Number of Beds/Units | Bed		10,689	10,819
Total Real Estate at Cost		$ 1,038,815	$ 1,042,754
Accumulated Depreciation		(195,942)	(190,038)
Total Real Estate Investments, Net		$ 842,873	$ 852,716
Operating Segments [Member] | Senior Housing [Member]
Real Estate Properties [Line Items]
Number of Properties | Facilitiy		75	83
Number of Beds/Units | Bed		7,109	7,855
Total Real Estate at Cost		$ 1,032,562	$ 1,153,739
Accumulated Depreciation		(82,451)	(80,449)
Total Real Estate Investments, Net		$ 950,111	$ 1,073,290
Operating Segments [Member] | Managed Properties [Member]
Real Estate Properties [Line Items]
Number of Properties | Facilitiy		10	2
Number of Beds/Units | Bed		888	134
Total Real Estate at Cost		$ 157,573	$ 34,212
Accumulated Depreciation		(7,901)	(1,682)
Total Real Estate Investments, Net		$ 149,672	$ 32,530
Operating Segments [Member] | Acute Care Hospital [Member]
Real Estate Properties [Line Items]
Number of Properties | Facilitiy		1	1
Number of Beds/Units | Bed		70	70
Total Real Estate at Cost		$ 61,640	$ 61,640
Accumulated Depreciation		(10,849)	(10,387)
Total Real Estate Investments, Net		50,791	51,253
Corporate, Non-Segment [Member]
Real Estate Properties [Line Items]
Total Real Estate at Cost		407	406
Accumulated Depreciation		(262)	(256)
Total Real Estate Investments, Net		$ 145	$ 150