Commitments And Contingencies (Details) (USD $)	9 Months Ended					9 Months Ended													9 Months Ended		9 Months Ended			9 Months Ended
	Sep. 30, 2013 properties	Aug. 30, 2013	Dec. 31, 2012	Apr. 30, 2013 Fundamental Long Term Care Holdings [Member] properties beds_or_units	Oct. 31, 2011 Acquisition Legend Healthcare [Member] properties	Sep. 30, 2013 Acquisition Helix Healthcare [Member]	Mar. 31, 2010 Acquisition Helix Healthcare [Member]	Sep. 30, 2013 Bickford Commitment [Member] properties	Sep. 30, 2013 Kentucky River Commitment [Member]	Sep. 30, 2012 Kentucky River Commitment [Member]	Oct. 31, 2011 Contingent Payment [Member] Acquisition Legend Healthcare [Member]	Sep. 30, 2013 Sante Partners Commitment [Member]	Sep. 30, 2013 Construction Loans [Member] beds_or_units	Sep. 30, 2013 Discovery Regency Pointe [Member]	Sep. 30, 2013 Discovery Regency Pointe [Member] 1st Contingent Payment Amount [Member]	Apr. 30, 2013 SeniorTrust [Member]	Sep. 30, 2013 Elder Trust [Member]	Aug. 30, 2013 Elder Trust [Member] properties	Sep. 30, 2013 Bickford Senior Living [Member] properties	Jun. 28, 2013 Bickford Senior Living [Member] beds_or_units properties	Sep. 30, 2013 Kentucky River [Member]	Sep. 30, 2012 Kentucky River [Member]	Sep. 30, 2013 Legend Healthcare [Member]	Sep. 30, 2013 Sante Partners [Member]	Jun. 30, 2013 Litigation Settled [Member] SeniorTrust [Member]	Sep. 30, 2013 Litigation Settled [Member] Elder Trust [Member] properties
Number of Real Estate Properties To Be Constructed								3
Maximum Commitment For All Active Development Projects								$ 27,000,000											$ 27,000,000
Construction and Development Costs																			14,252,000		4,363,000			2,639,000
Lease Extension Period in Years	10 years 0 months 0 days
Significant development and lease transactions										8,000,000
Construction Commitment Period in Years									2
Lease Renewal Period In Years				5 years 0 months 0 days										5 years 0 months 0 days								5 years 0 months 0 days
Number of Real Estate Properties	135			2	4													7	27	17						7
Significant Acquisition, Cost, Receivable Cancelled																		13,741,000								13,741,000
Significant Acquisition, Cost, Cash				26,150,000														23,676,000								23,676,000
Number of years in initial lease term		15 years 0 months 0 days		10										15 years 0 months 0 days
Initial Lease Amount														942,000			350,000		18,836,000	7,750,000
Purchase Option Amount																	49,000,000
Significant acquisitions and disposals, acquisition costs or sale proceeds					55,278,000		12,500,000				5,478,000			12,000,000				37,417,000
Business Combination, Contingent Consideration, Liability				1,600,000																			3,256,000
Supplemental Construction Loan Commitment Draw													2,000,000
Construction of transitional rehabilitation center, number of beds				254									70	120						750
Capital improvements commitment												3,500,000
Conditional future payments related to purchase/leaseback transaction						1,000,000
Real estate purchase liabilities	5,856,000		4,256,000											2,500,000	750,000
Mortgage Loans On Real Estate, Litigation Settlement																$ 15,000,000									$ 15,000,000