Real Estate And Loans Receivable (Disposals) (Details) (USD $)	12 Months Ended					0 Months Ended		3 Months Ended	1 Months Ended	3 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2011 Acute Care Facility [Member]	Jun. 17, 2010 Inpatient Rehabilitation Facilities [Member]	Dec. 30, 2011 Business Disposals [Member] Sherman Oaks Hospital [Member]	Dec. 30, 2011 Business Disposals [Member] MountainView Regional Rehabilitation Hospital [Member]	Dec. 31, 2010 Business Disposals [Member] Montclair Hospital [Member]	Oct. 31, 2010 Business Disposals [Member] Sharpstown Facility [Member	Jun. 30, 2010 Business Disposals [Member] Acute Care Medical Center [Member]	Dec. 31, 2009 Business Disposals [Member] Acute Care Facility [Member]
Real Estate And Lending Activities [Line Items]
Number of properties					3						1
Number of beds sold										369
Selling price of real estate						$ 20,000,000	$ 21,100,000	$ 20,000,000	$ 2,700,000	$ 75,000,000	$ 15,000,000
Gain on sale of real estate	5,431,000	10,566,000	278,000			3,100,000	2,300,000	2,200,000	700,000	6,000,000	300,000
Wrote off in related straight-line rent receivables				$ 1,000,000		$ 1,200,000