Investments In Marketable Securities (Narrative) (Details) (USD $)	12 Months Ended						15 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011 LTC Properties, Inc. [Member]	Dec. 31, 2011 NHC Convertible Preferred Stock [Member]	Dec. 31, 2011 National Healthcare and LTC Properties, Inc [Member]	Dec. 31, 2012 Nationwide Health Properties [Member]	Dec. 31, 2012 Ventas Inc [Member]
Available-for-sale Securities, Gross Unrealized Gains	$ 8,796,000	$ 7,181,000
Common Shares Sold				381,000
Preferred Shares Sold					96,330
Net realized gains on sales of marketable securities	(30,000)	(9,899,000)	0			(8,809,000)	(1,090,000)
Common Shares Given Up In Exchange							50,000
Common Shares Received In Exchange								39,330
Dividend and Interest Income From Marketable Securities	$ 628,000	$ 822,000	$ 1,267,000