Investments In Marketable Securities (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011
Dividend and Interest Income From Marketable Securities			$ 467,000	$ 674,000
Available-for-sale Securities, Gross Unrealized Gains	7,718,000		7,718,000		7,181,000
Marketable securities	11,806,000		11,806,000		11,364,000
Net realized gains on sales of marketable securities	0	(1,090,000)	(30,000)	(9,899,000)
LTC Properties, Inc. [Member]
Common Shares Sold				381,000
Nationwide Health Properties [Member]
Net realized gains on sales of marketable securities		$ (1,090,000)