Segment Reporting (Schedule Of Reconciliation Of Net Operating Income To Income From Continuing Operations) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Segment Reporting [Abstract]
Net operating income	$ 37,333	[1]	$ 27,357	[1]
Depreciation and amortization	(40,802)		(44,985)
Realized gains (losses) on disposition of rental property, net	144
Net loss	(3,325)		(17,628)
Noncontrolling interest in consolidated joint ventures	490		322
Noncontrolling interest in Operating Partnership	314		2,008
Net loss available to common shareholders	$ (2,521)		$ (15,298)

[1] Net operating income represents total revenues less total operating and interest expenses (as defined in Note “a”), plus equity in earnings (loss) of unconsolidated joint ventures, for the period.