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Earnings Per Share - Computation of Company's Earnings Per Share (EPS) and Reconciliation of Net (Loss) Income from Continuing Operations and Number of Common Shares Used in Computations of "Basic" EPS and "Diluted" EPS (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Continuing Operations: |  |
Income from continuing operations | $ 6,241 | $ 184
Plus: (Loss) gain on disposition of real estate | (57) | 665
Plus: Loss attributable to non-controlling interests | (191) | (176)
Income from continuing operations attributable to DDR | 5,993 | 673
Preferred dividends | (7,030) | (6,967)
Basic-Loss from continuing operations attributable to DDR common shareholders | (1,037) | (6,294)
Less: Earnings attributable to unvested shares and operating partnership units | (364) | (292)
Basic-Loss from continuing operations | (1,401) | (6,586)
Discontinued operations: |  |
Basic-Income (loss) from discontinued operations | 310 | (15,730)
Basic-Net loss attributable to DDR common shareholders after allocation to participating securities | (1,091) | (22,316)
Continuing Operations: |  |
Basic-Loss from continuing operations | (1,037) | (6,294)
Less: Earnings attributable to unvested shares and operating partnership units | (364) | (292)
Diluted-Loss from continuing operations | (1,401) | (6,586)
Discontinued Operations: |  |
Basic-Income (loss) from discontinued operations | 310 | (15,730)
Diluted-Net loss attributable to DDR common shareholders after allocation to participating securities | $ (1,091) | $ (22,316)
Number of Shares: |  |
Basic and Diluted-Average shares outstanding | 313,231 | 275,214
Basic Earnings Per Share: |  |
Loss from continuing operations attributable to DDR common shareholders | $ 0.00 | $ (0.02)
Income (loss) from discontinued operations attributable to DDR common shareholders | $ 0.00 | $ (0.06)
Net loss attributable to DDR common shareholders | $ 0.00 | $ (0.08)
Dilutive Earnings Per Share: |  |
Loss from continuing operations attributable to DDR common shareholders | $ 0.00 | $ (0.02)
Income (loss) from discontinued operations attributable to DDR common shareholders | $ 0.00 | $ (0.06)
Net loss attributable to DDR common shareholders | $ 0.00 | $ (0.08)

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