Investments In Unconsolidated Joint Ventures And Entities (Summary Of The Investments In And Advances To Unconsolidated Joint Ventures And Entities) (Details) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Rialto Distribution [Member]	Dec. 31, 2009 Rialto Distribution [Member]	Oct. 01, 2005 Rialto Distribution [Member]	Dec. 31, 2012 Rialto Cinemas [Member]	Dec. 31, 2011 Rialto Cinemas [Member]	Oct. 01, 2005 Rialto Cinemas [Member]	Dec. 31, 2012 205-209 East 57th Street Associates, LLC [Member]	Dec. 31, 2011 205-209 East 57th Street Associates, LLC [Member]	Dec. 31, 2012 Mt. Gravatt [Member]	Dec. 31, 2011 Mt. Gravatt [Member]
Schedule of Equity Method Investments [Line Items]
Ownership percentage in equity method investment			33.30%		33.30%	50.00%			25.00%		33.30%
Total investments	$ 7,715,000	$ 7,839,000		$ 0		$ 1,561,000	$ 1,586,000	$ 50	$ 60,000	$ 33,000	$ 6,094,000	$ 6,220,000