Real Property Acquisitions and Development (Details 1) (USD $)	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Senior housing - triple net [Member]
Estimated Fair Value of Allocated Purchase Price of Asset and Liabilities
Land and land improvements	$ 2,750,000	[1]	$ 8,533,000
Buildings and improvements	30,693,000	[1]	47,993,000
Total assets acquired	33,443,000	[1]	56,526,000
Non-cash acquisition related activity	(657,000)		0
Cash disbursed for acquisitions	32,786,000	[1]	56,526,000
Construction in progress additions	24,657,000		23,946,000
Less: Capitalized Interest	(1,170,000)	[1]	(1,227,000)
Less: Foreign currency translation	(14,000)		0
Cash disbursed for construction in progress	23,473,000	[1]	22,719,000
Capital improvements to existing properties	5,877,000	[1]	8,336,000
Total cash invested in real property	62,136,000	[1]	87,581,000
Senior housing - triple net [Member] | Preliminary [Member]
Estimated Fair Value of Allocated Purchase Price of Asset and Liabilities
Total cash invested in real property	3,402,000
Senior housing - operating [Member]
Estimated Fair Value of Allocated Purchase Price of Asset and Liabilities
Land and land improvements	2,100,000	[2]	216,949,000
Buildings and improvements	19,069,000	[2]	2,074,770,000
Acquired lease intangibles	1,331,000	[2]	142,054,000
Restricted cash	0	[2]	22,863,000
Receivables and other assets	0	[2]	3,225,000
Total assets acquired	22,500,000	[2],[3]	2,459,861,000
Secured debt	0	[2]	(138,259,000)
Accrued expenses and other liabilities	(245,000)	[2]	(31,302,000)
Total liabilities assumed	(245,000)	[2]	(169,561,000)
Noncontrolling interests	0	[2]	(4,868,000)
Non-cash acquisition related activity	0	[2],[4]	(555,562,000)
Cash disbursed for acquisitions	22,255,000	[2]	1,729,870,000
Construction in progress additions	1,026,000		235,000
Less: Capitalized Interest	(50,000)	[2]	(2,000)
Cash disbursed for construction in progress	976,000	[2]	233,000
Capital improvements to existing properties	13,998,000	[2]	10,604,000
Total cash invested in real property	37,229,000	[2]	1,740,707,000
Cash Acquired from Acquisition	245,000		51,083,000
Medical facilities [Member]
Estimated Fair Value of Allocated Purchase Price of Asset and Liabilities
Construction in progress additions	38,237,000		35,139,000
Less: Capitalized Interest	(385,000)	[5]	(377,000)
Less: Accruals	(9,584,000)	[2],[5]	(17,661,000)
Cash disbursed for construction in progress	28,268,000	[5]	17,101,000
Capital improvements to existing properties	7,531,000	[5]	5,189,000
Total cash invested in real property	$ 35,799,000	[5]	$ 22,290,000

[1] (1) Includes acquisitions with an aggregate purchase price of $3,402,000 for which the allocation of the purchase price consideration is preliminary and subject to change.

[2]

[3] (1) Excludes $245,000 and $51,083,000 of cash acquired during the three months ended March 31, 2014 and 2013, respectively.

[4] (2) Represents Sunrise loan and noncontrolling interests acquisitions.

[5] (1) Represents non-cash accruals for amounts to be paid in future periods relating to properties that converted in the periods noted above.