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Per Share Data (Tables) | 9 Months Ended
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Sep. 30, 2012
Earnings Per Share [Abstract] |
Calculation Of Basic And Diluted Earnings Per Share | The following table presents information necessary to calculate basic and diluted earnings per share for the periods indicated:
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
(in thousands, except per share amounts) | 2012 |  | 2011 |  | 2012 |  | 2011
Earnings per share calculation – basic |  |  |  |  |  |  |
Income (loss) from continuing operations attributable to common shareholders | $ | 30,360 |  |  | $ | 10,751 |  |  | $ | 108,091 |  |  | $ | (638 | )
Amount allocated to participating securities | (288 | ) |  | (154 | ) |  | (1,387 | ) |  | (118 | )
Income (loss) from continuing operations attributable to common shareholders, net of amount allocated to participating securities | 30,072 |  |  | 10,597 |  |  | 106,704 |  |  | (756 | )
Income from discontinued operations, including gain on sale, attributable to common shareholders | 343 |  |  | 1,089 |  |  | 33,133 |  |  | 3,167 |
Net income attributable to common shareholders, as adjusted | $ | 30,415 |  |  | $ | 11,686 |  |  | $ | 139,837 |  |  | $ | 2,411 |
Income (loss) from continuing operations attributable to common shareholders, as adjusted – per share | $ | 0.35 |  |  | $ | 0.14 |  |  | $ | 1.29 |  |  | $ | (0.01 | )
Income from discontinued operations, including gain on sale, attributable to common shareholders – per share | 0.01 |  |  | 0.02 |  |  | 0.40 |  |  | 0.04 |
Net income attributable to common shareholders, as adjusted – per share | $ | 0.36 |  |  | $ | 0.16 |  |  | $ | 1.69 |  |  | $ | 0.03 |
Weighted average number of common shares outstanding – basic | 85,631 |  |  | 73,242 |  |  | 82,923 |  |  | 72,502 |
Earnings per share calculation – diluted |  |  |  |  |  |  |
Income (loss) from continuing operations attributable to common shareholders, net of amount allocated to participating securities | $ | 30,072 |  |  | $ | 10,597 |  |  | $ | 106,704 |  |  | $ | (756 | )
Income allocated to common units from continuing operations | — |  |  | 8 |  |  | 1,167 |  |  | — |
Income (loss) from continuing operations attributable to common shareholders, as adjusted | 30,072 |  |  | 10,605 |  |  | 107,871 |  |  | (756 | )
Income from discontinued operations, including gain on sale, attributable to common shareholders | 343 |  |  | 1,089 |  |  | 33,133 |  |  | 3,167 |
Net income attributable to common shareholders, as adjusted | $ | 30,415 |  |  | $ | 11,694 |  |  | $ | 141,004 |  |  | $ | 2,411 |
Income (loss) from continuing operations attributable to common shareholders, as adjusted – per share | $ | 0.35 |  |  | $ | 0.14 |  |  | $ | 1.27 |  |  | $ | (0.01 | )
Income from discontinued operations, including gain on sale, attributable to common shareholders – per share | — |  |  | 0.02 |  |  | 0.39 |  |  | 0.04 |
Net income attributable to common shareholders, as adjusted – per share | $ | 0.35 |  |  | $ | 0.16 |  |  | $ | 1.66 |  |  | $ | 0.03 |
Weighted average number of common shares outstanding – basic | 85,631 |  |  | 73,242 |  |  | 82,923 |  |  | 72,502 |
Incremental shares issuable from assumed conversion of: |  |  |  |  |  |  |
Common share options and share awards granted | 662 |  |  | 793 |  |  | 655 |  |  | — |
Common units | — |  |  | 239 |  |  | 1,116 |  |  | — |
Weighted average number of common shares outstanding – diluted | 86,293 |  |  | 74,274 |  |  | 84,694 |  |  | 72,502 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations. + References No definition available. + Details
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