Annual report pursuant to Section 13 and 15(d)

Earnings Per Common Share (Computation Of Basic And Diluted Earnings Per Share) (Details)

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Earnings Per Common Share (Computation Of Basic And Diluted Earnings Per Share) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
3 Months Ended 12 Months Ended
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Sep. 30, 2010
Jun. 30, 2010
Mar. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Earnings Per Share [Abstract]                      
Debt Instrument, Interest Rate, Stated Percentage 3.875%               3.875%    
Income from continuing operations $ (10,385) [1],[2] $ 2,707 [1],[2] $ 4,431 [1],[2] $ 2,119 [1],[2] $ (6,963) [1],[2] $ 3,093 [1],[2] $ 3,444 [1],[2] $ 1,418 [1],[2] $ (1,128) $ 992 $ 9,723
Allocation of undistributed earnings to unvested restricted share awards and units to continuing operations                 0 (4) (26)
Adjusted income from continuing operations attributable to the controlling interests                 (1,128) 988 9,697
Income from discontinued operations, including gain on sale of real estate, net of taxes                 106,506 36,567 31,225
Net income attributable to noncontrolling interests                 (494) (133) (203)
Allocation of undistributed earnings to unvested restricted share awards and units to discontinued operations                 712 140 85
Adjusted income from discontinuing operations attributable to the controlling interests                 105,300 36,294 30,937
Adjusted net income attributable to the controlling interests                 $ 104,172 $ 37,282 $ 40,634
Weighted average shares outstanding - basic                 65,982 62,140 56,894
Effect of dilutive securities: Employee stock options and restricted share awards                 0 124 74
Weighted average shares outstanding - diluted                 65,982 62,264 56,968
Earnings per common share, basic, Continuing operations $ (0.16) [1],[2] $ 0.04 [1],[2] $ 0.07 [1],[2] $ 0.03 [1],[2] $ (0.11) [1],[2] $ 0.05 [1],[2] $ 0.05 [1],[2] $ 0.02 [1],[2] $ (0.02) $ 0.02 $ 0.17
Earnings per common share, basic, Discontinued operations                 $ 1.60 $ 0.58 $ 0.54
Basic earnings: Adjusted net income attributable to the controlling interests - Per Share Amount $ 0.46 [1],[2] $ 0.95 [1],[2] $ 0.10 [1],[2] $ 0.07 [1],[2] $ 0.16 [1],[2] $ 0.11 [1],[2] $ 0.24 [1],[2] $ 0.09 [1],[2] $ 1.58 $ 0.60 $ 0.71
Earnings per common share, diluted, Continuing operations $ (0.16) [1],[2] $ 0.04 [1],[2] $ 0.07 [1],[2] $ 0.03 [1],[2] $ (0.11) [1],[2] $ 0.04 [1],[2] $ 0.05 [1],[2] $ 0.02 [1],[2] $ (0.02) $ 0.02 $ 0.17
Diluted net income per share                 $ 1.60 $ 0.58 $ 0.54
Diluted earnings: Adjusted net income attributable to the controlling interests - Per Share Amount $ 0.46 [1],[2] $ 0.95 [1],[2] $ 0.10 [1],[2] $ 0.07 [1],[2] $ 0.16 [1],[2] $ 0.10 [1],[2] $ 0.24 [1],[2] $ 0.09 [1],[2] $ 1.58 $ 0.60 $ 0.71
[1] With regard to per share calculations, the sum of the quarterly results may not equal full year results due to rounding.
[2] The prior quarter results have been restated to conform to the current quarter presentation. Specifically, results related to properties sold or held for sale have been reclassified into discontinued operations.