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Per Share Data (Tables) | 6 Months Ended
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Jun. 30, 2014
Earnings Per Share [Abstract] |
Calculation Of Basic And Diluted Earnings Per Share |
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 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 | $ | 34,972 |  |  | $ | 46,242 |  |  | $ | 74,655 |  |  | $ | 74,615 |
Income allocated to common units from continuing operations | 314 |  |  | 265 |  |  | 623 |  |  | 541 |
Income from continuing operations attributable to common shareholders, as adjusted | 35,286 |  |  | 46,507 |  |  | 75,278 |  |  | 75,156 |
Discontinued operations attributable to common shareholders | — |  |  | 25,234 |  |  | — |  |  | 59,698 |
Net income attributable to common shareholders – diluted | $ | 35,286 |  |  | $ | 71,741 |  |  | $ | 75,278 |  |  | $ | 134,854 |
Earnings per common share from continuing operations | $ | 0.40 |  |  | $ | 0.53 |  |  | $ | 0.85 |  |  | $ | 0.85 |
Earnings per common share from discontinued operations | — |  |  | 0.28 |  |  | — |  |  | 0.68 |
Total earnings per common share – diluted | $ | 0.40 |  |  | $ | 0.81 |  |  | $ | 0.85 |  |  | $ | 1.53 |
Weighted average number of common shares outstanding – basic | 87,845 |  |  | 87,191 |  |  | 87,748 |  |  | 86,949 |
Incremental shares issuable from assumed conversion of: |  |  |  |  |  |  |
Common share options and share awards granted | 314 |  |  | 467 |  |  | 338 |  |  | 519 |
Common units | 813 |  |  | 814 |  |  | 813 |  |  | 815 |
Weighted average number of common shares outstanding – diluted | 88,972 |  |  | 88,472 |  |  | 88,899 |  |  | 88,283 |

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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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