Discontinued Operations (Schedule Of Discontinued Operating Results) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues, net	$ 34,922	$ 86,466	$ 127,824
Depreciation and amortization	(8,172)	(18,913)	(37,358)
Operating expenses	(6,176)	(16,112)	(23,092)
Real estate taxes, net	(3,779)	(11,010)	(16,955)
Impairment loss	(236)	(5,851)	(26,203)
General and administrative	(24)	(2,214)	(76)
Interest, net	(6,395)	(9,663)	(11,258)
Interest and other income, net	2	1	3
Gain on acquisition	0	0	4,559
Provision for income taxes	(323)	(417)	(455)
Operating income from discontinued operations	9,819	22,287	16,989
Gain on sale of property from discontinued operations	119,203	68,619	10,648
Income from Discontinued Operations	$ 129,022	$ 90,906	$ 27,637