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.