DISPOSITIONS (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014 property	Jun. 30, 2013	Jun. 30, 2014 property	Jun. 30, 2013	Dec. 31, 2013 property
Significant Acquisitions and Disposals
Properties classified as held for sale	47		47		19
Assets held for sale	$ 290,585,000		$ 290,585,000		$ 155,340,000
Liabilities of assets held-for-sale	99,539,000		99,539,000		64,500,000
Impairment of real estate			6,800,000	27,500,000
Impairment of long-lived assets to be disposed of			1,500,000	26,100,000
Revenues:
Rental income	1,808,000	3,853,000	4,008,000	7,885,000
Resident fees and services	0	141,000	0	759,000
Interest and other income	0	0	750,000	0
Total Revenues	1,808,000	3,994,000	4,758,000	8,644,000
Expenses:
Interest	503,000	1,459,000	1,181,000	3,154,000
Depreciation and amortization	1,247,000	22,463,000	1,528,000	33,938,000
Property-level operating expenses	(1,000)	470,000	280,000	1,382,000
General, administrative and professional expenses	0	3,000	0	3,000
Gain on extinguishment of debt, net	0	(153,000)	0	(153,000)
Other	130,000	29,000	246,000	(495,000)
Total expenses	1,879,000	24,271,000	3,235,000	37,829,000
(Loss) income before (loss) gain on real estate dispositions	(71,000)	(20,277,000)	1,523,000	(29,185,000)
(Loss) gain on real estate dispositions, net	(184,000)	1,718,000	1,253,000	2,195,000
Discontinued operations	(255,000)	(18,559,000)	2,776,000	(26,990,000)
Triple-Net Leased Properties
Significant Acquisitions and Disposals
Properties classified as held for sale	11		11		15
Assets held for sale	111,099,000		111,099,000		125,981,000
Liabilities of assets held-for-sale	49,145,000		49,145,000		50,456,000
MOB Operations
Significant Acquisitions and Disposals
Properties classified as held for sale	36		36		4
Assets held for sale	179,486,000		179,486,000		29,359,000
Liabilities of assets held-for-sale	50,394,000		50,394,000		14,044,000
MOB Operations | Medical Office Buildings
Significant Acquisitions and Disposals
Properties classified as held for sale	34		34
Aggregate NOI			6,200,000	7,600,000
2014 Dispositions
Significant Acquisitions and Disposals
Proceeds from disposition of assets, including termination fees			52,400,000
Gain (loss) on disposition of assets			14,300,000
Expenses:
(Loss) gain on real estate dispositions, net			1,100,000
2014 Dispositions | Triple-Net Leased Properties
Significant Acquisitions and Disposals
Number of real estate properties sold			8
2014 Dispositions | MOB Operations | Medical Office Buildings
Significant Acquisitions and Disposals
Number of real estate properties sold			4
2013 Dispositions
Significant Acquisitions and Disposals
Proceeds from disposition of assets, including termination fees				24,500,000
Lease Termination Fees				300,000
Expenses:
(Loss) gain on real estate dispositions, net				$ 2,400,000
2013 Dispositions | Triple-Net Leased Properties
Significant Acquisitions and Disposals
Number of real estate properties sold				14
2013 Dispositions | Senior Living Operations | Seniors Housing Communities
Significant Acquisitions and Disposals
Number of real estate properties sold				1
2013 Dispositions | MOB Operations | Medical Office Buildings
Significant Acquisitions and Disposals
Number of real estate properties sold				2
Discontinued Operations [Member] | Triple-Net Leased Properties
Significant Acquisitions and Disposals
Properties classified as held for sale	8		8
Discontinued Operations [Member] | MOB Operations
Significant Acquisitions and Disposals
Properties classified as held for sale	2		2