Consolidated Statements Of Operations (USD $)
In Thousands, except Per Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
REVENUES    
Base rents $ 123,793 $ 134,051
Escalations and recoveries from tenants 18,399 25,568
Real estate services 7,644 6,692
Parking income 2,542 2,114
Other income 1,337 1,171
Total revenues 153,715 169,596
EXPENSES    
Real estate taxes 22,452 24,351
Utilities 17,575 28,281
Operating services 28,228 29,222
Real estate services expenses 6,639 6,709
General and administrative 11,011 22,881
Depreciation and amortization 40,802 44,985
Total expenses 126,707 156,429
Operating income 27,008 13,167
OTHER (EXPENSE) INCOME    
Interest expense (27,215) (29,946)
Interest and other investment income 267 386
Equity in earnings (loss) of unconsolidated joint ventures (3,529) (1,235)
Realized gains (losses) on disposition of rental property, net 144  
Total other (expense) income (30,333) (30,795)
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)
Basic earnings per common share:    
Net loss available to common shareholders $ (0.03) $ (0.17)
Diluted earnings per common share:    
Net loss available to common unitholders $ (0.03) $ (0.17)
Basic weighted average shares outstanding 89,192 88,289
Diluted weighted average shares outstanding 100,266 99,876