Fair Value Of Financial Instruments (Assets Measured At Fair Value On A Recurring Basis) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Available For Sale Securities Equity Securities	$ 11,364	$ 22,476
Total Marketable Securities	11,364	22,476
Common And Preferred Stock Of Other REITs [Member]
Available For Sale Securities Equity Securities	11,364	21,156
NHC Convertible Preferred Stock [Member]
Available For Sale Securities Equity Securities		1,320
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member]
Total Marketable Securities	11,364	22,476
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] \| Common And Preferred Stock Of Other REITs [Member]
Available For Sale Securities Equity Securities	11,364	21,156
Quoted Prices In Active Markets For Identical Assets (Level 1) [Member] \| NHC Convertible Preferred Stock [Member]
Available For Sale Securities Equity Securities		$ 1,320

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

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