Commitments And Contingencies (Details) (USD $)	12 Months Ended								1 Months Ended			1 Months Ended		2 Months Ended	12 Months Ended
	Dec. 31, 2011 properties	Dec. 31, 2010 properties	Dec. 31, 2009	Jun. 30, 2010	May 31, 2011 Acquisition Selah Management Group [Member] properties	Jan. 31, 2011 Disposal [Member]	Nov. 30, 2008 Disposal [Member] properties	Dec. 31, 2004 Disposal [Member]	Oct. 31, 2009 Acquisition Bickford Senior Living [Member]	Dec. 31, 2011 Acquisition Bickford Senior Living [Member] properties	Jun. 30, 2010 Acquisition Bickford Senior Living [Member] properties	Mar. 31, 2010 Acquisition Helix Healthcare [Member]	Oct. 31, 2011 Acquisition Legend Healthcare [Member] properties	Dec. 31, 2011 Acquisition Legend Healthcare [Member]	Dec. 31, 2011 Assets Held-for-sale [Member] properties	Dec. 31, 2009 Assets Held-for-sale [Member] properties	Sep. 30, 2011 Acquisition Polaris Hospital Company [Member]	Dec. 31, 2011 Pending Commitments [Member]	Mar. 31, 2010 Contingent Payment [Member] Acquisition Helix Healthcare [Member]	Oct. 31, 2011 Contingent Payment [Member] Acquisition Legend Healthcare [Member]
Significant acquisitions and disposals, acquisition costs or sale proceeds					$ 15,000,000	$ 4,500,000			$ 28,250,000		$ 11,500,000	$ 12,500,000	$ 55,278,000						$ 1,000,000	$ 5,478,000
Conditional future payments related to purchase/leaseback transaction									3,000,000			1,000,000
Conditional payment period, years									three				two
Number of Real Estate Properties	97	88			4		1	2		8	3		4		5	6		3
Construction loan commitment				13,870,000
Funded amount towards construction development commitment																	4,953,000
Funded amount towards construction loan commitment	11,870,000
Additional contingent loan amount	2,000,000
Capital improvements commitment	750,000
Funded amount towards certain capital improvements	604,000
Mortgage note receivable commitment	50,000
Commitment Limit To Finance Current Lessee In Connection With Sale Of Nursing Facilities															8,000,000
Individual loans repayment period															5
Interest rate on asset sale loan commitment															11.50%
Rental income	76,050,000	71,289,000	53,648,000											644,000
Significant development and lease transactions																	$ 21,500,000
Construction of transitional rehabilitation center, number of beds				70
Number of beds in real estate property												66	498				60