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, 2012
Sep. 30, 2012
Jun. 30, 2012
Mar. 31, 2012
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Earnings Per Share [Abstract]                      
Stated interest rate         3.875%         3.875%  
Income (loss) from continuing operations $ 1,248 [1],[2] $ 5,323 [1],[2] $ 5,694 [1],[2] $ 4,834 [1],[2] $ (10,844) [1],[2],[3] $ 2,275 [1],[2] $ 3,963 [1],[2] $ 1,708 [1],[2] $ 17,099 $ (2,898) $ (609)
Allocation of undistributed earnings to unvested restricted share awards and units to continuing operations                 (451) 0 0
Adjusted income (loss) from continuing operations attributable to the controlling interests                 16,648 (2,898) (609)
Income from discontinued operations, including gain on sale of real estate, net of taxes                 6,609 108,276 38,168
Net income attributable to noncontrolling interests                 0 (494) (133)
Allocation of undistributed earnings to unvested restricted share awards and units to discontinued operations                 (131) (712) (144)
Adjusted income from discontinued operations attributable to the controlling interests                 6,478 107,070 37,891
Adjusted net income attributable to the controlling interests                 $ 23,126 $ 104,172 $ 37,282
Weighted average shares outstanding – basic                 66,239 65,982 62,140
Employee stock options and restricted share awards                 137 0 0
Weighted average shares outstanding - diluted                 66,376 65,982 62,140
Continuing operations - basic (in dollars per share) $ 0.02 [1],[2] $ 0.08 [1],[2] $ 0.08 [1],[2] $ 0.07 [1],[2] $ (0.16) [1],[2] $ 0.03 [1],[2] $ 0.08 [1],[2] $ 0.03 [1],[2] $ 0.25 $ (0.04) $ (0.01)
Discontinued operations (in dollars per share)                 $ 0.10 $ 1.62 $ 0.61
Basic earnings: Adjusted net income attributable to the controlling interests - Per Share Amount $ 0.04 [1],[2] $ 0.14 [1],[2] $ 0.09 [1],[2] $ 0.08 [1],[2] $ 0.46 [1],[2] $ 0.95 [1],[2] $ 0.10 [1],[2] $ 0.07 [1],[2] $ 0.35 $ 1.58 $ 0.60
Continuing operations - diluted (in dollars per share) $ 0.02 [1],[2] $ 0.08 [1],[2] $ 0.08 [1],[2] $ 0.07 [1],[2] $ (0.16) [1],[2] $ 0.03 [1],[2] $ 0.08 [1],[2] $ 0.03 [1],[2] $ 0.25 $ (0.04) $ (0.01)
Discontinued operations (in dollars per share)                 $ 0.10 $ 1.62 $ 0.61
Net income attributable to the controlling interests per share, diluted $ 0.04 [1],[2] $ 0.14 [1],[2] $ 0.09 [1],[2] $ 0.08 [1],[2] $ 0.46 [1],[2] $ 0.95 [1],[2] $ 0.10 [1],[2] $ 0.07 [1],[2] $ 0.35 $ 1.58 $ 0.60
[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.
[3] The three months ended December 31, 2012 and 2011 include the impact of real estate impairments of $2.1 million and $14.5 million, respectively.