Investments In Marketable Securities (Schedule Of Marketable Securities) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Available-for-sale Securities, Amortized Cost Basis	$ 4,183	$ 7,146
Available For Sale Securities Equity Securities	11,364	22,476
Common And Preferred Stock Of Other REITs [Member]
Available-for-sale Securities, Amortized Cost Basis	4,183	5,830
Available For Sale Securities Equity Securities	11,364	21,156
NHC Convertible Preferred Stock [Member]
Available-for-sale Securities, Amortized Cost Basis		1,316
Available For Sale Securities Equity Securities		$ 1,320

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References+ Details

For an unclassified balance sheet, this item represents equity securities categorized neither as held-to-maturity nor trading.

+ References

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

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Reference 9: http://www.xbrl.org/2003/role/presentationRef

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Reference 10: http://www.xbrl.org/2003/role/presentationRef

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details