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Per Share Data (Tables) | 9 Months Ended
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Sep. 30, 2014
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) | 2014 |  | 2013 |  | 2014 |  | 2013
Earnings per common share calculation – basic |  |  |  |  |  |  |
Income from continuing operations attributable to common shareholders | $ | 38,283 |  |  | $ | 34,044 |  |  | $ | 113,591 |  |  | $ | 109,994 |
Amount allocated to participating securities | (317 | ) |  | (623 | ) |  | (970 | ) |  | (1,958 | )
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities | 37,966 |  |  | 33,421 |  |  | 112,621 |  |  | 108,036 |
Discontinued operations, including gain on sale, attributable to common shareholders | — |  |  | 36,676 |  |  | — |  |  | 96,374 |
Net income attributable to common shareholders – basic | $ | 37,966 |  |  | $ | 70,097 |  |  | $ | 112,621 |  |  | $ | 204,410 |
Earnings per common share continuing operations | $ | 0.43 |  |  | $ | 0.38 |  |  | $ | 1.28 |  |  | $ | 1.24 |
Earnings per common share from discontinued operations | — |  |  | 0.42 |  |  | — |  |  | 1.11 |
Total earnings per common share – basic | $ | 0.43 |  |  | $ | 0.80 |  |  | $ | 1.28 |  |  | $ | 2.35 |
Weighted average number of common shares outstanding – basic | 88,146 |  |  | 87,449 |  |  | 87,882 |  |  | 87,117 |
| Three Months Ended |  | Nine Months Ended
| September 30, |  | September 30,
(in thousands, except per share amounts) | 2014 |  | 2013 |  | 2014 |  | 2013
Earnings per common share calculation – diluted |  |  |  |  |  |  |
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities | $ | 37,966 |  |  | $ | 33,421 |  |  | $ | 112,621 |  |  | $ | 108,036 |
Income allocated to common units from continuing operations | 313 |  |  | 274 |  |  | 937 |  |  | 814 |
Income from continuing operations attributable to common shareholders, as adjusted | 38,279 |  |  | 33,695 |  |  | 113,558 |  |  | 108,850 |
Discontinued operations, including gain on sale, attributable to common shareholders | — |  |  | 36,676 |  |  | — |  |  | 96,374 |
Discontinued operations, including gain on sale, allocated to common units | — |  |  | 53 |  |  | — |  |  | 1,910 |
Net income attributable to common shareholders – diluted | $ | 38,279 |  |  | $ | 70,424 |  |  | $ | 113,558 |  |  | $ | 207,134 |
Earnings per common share from continuing operations | $ | 0.43 |  |  | $ | 0.38 |  |  | $ | 1.28 |  |  | $ | 1.23 |
Earnings per common share from discontinued operations | — |  |  | 0.41 |  |  | — |  |  | 1.11 |
Total earnings per common share – diluted | $ | 0.43 |  |  | $ | 0.79 |  |  | $ | 1.28 |  |  | $ | 2.34 |
Weighted average number of common shares outstanding – basic | 88,146 |  |  | 87,449 |  |  | 87,882 |  |  | 87,117 |
Incremental shares issuable from assumed conversion of: |  |  |  |  |  |  |
Common share options and share awards granted | 396 |  |  | 453 |  |  | 358 |  |  | 497 |
Common units | 811 |  |  | 814 |  |  | 812 |  |  | 815 |
Weighted average number of common shares outstanding – diluted | 89,353 |  |  | 88,716 |  |  | 89,052 |  |  | 88,429 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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