Investments In Unconsolidated Joint Ventures (Summary Of Results Of Operations Of Unconsolidated Joint Ventures) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Investments In Unconsolidated Joint Ventures [Abstract]
Total revenues	$ 68,183	$ 51,308	$ 76,862
Operating and other expenses	(37,008)	(32,074)	(39,542)
Depreciation and amortization	(10,139)	(10,593)	(15,110)
Interest expense	(6,775)	(6,743)	(9,182)
Net income	$ 14,261	$ 1,898	$ 13,028