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Per Share Data (Tables) | 12 Months Ended
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Dec. 31, 2020
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:
|  | Year Ended December 31,
(in thousands, except per share amounts) |  | 2020 |  | 2019 |  | 2018
Earnings per common share calculation – basic |  |  |  |  |  |
Income from continuing operations attributable to common shareholders |  | $ | 123,911 |  |  | $ | 219,623 |  |  | $ | 156,128 |
Amount allocated to participating securities |  | (261) |  |  | (539) |  |  | (1,107) |
Net income attributable to common shareholders – basic |  | $ | 123,650 |  |  | $ | 219,084 |  |  | $ | 155,021 |
Total earnings per common share – basic |  | $ | 1.24 |  |  | $ | 2.23 |  |  | $ | 1.63 |
Weighted average number of common shares outstanding – basic |  | 99,385 |  |  | 98,460 |  |  | 95,208 |
Earnings per common share calculation – diluted |  |  |  |  |  |
Income from continuing operations attributable to common shareholders, net of amount allocated to participating securities |  | $ | 123,650 |  |  | $ | 219,084 |  |  | $ | 155,021 |
Income allocated to common units from continuing operations |  | — |  |  | 1,593 |  |  | — |
Net income attributable to common shareholders – diluted |  | $ | 123,650 |  |  | $ | 220,677 |  |  | $ | 155,021 |
Total earnings per common share – diluted |  | $ | 1.24 |  |  | $ | 2.22 |  |  | $ | 1.63 |
Weighted average number of common shares outstanding – basic |  | 99,385 |  |  | 98,460 |  |  | 95,208 |
Incremental shares issuable from assumed conversion of: |  |  |  |  |  |
Common share options and share awards granted |  | 53 |  |  | 119 |  |  | 158 |
Common units |  | — |  |  | 805 |  |  | — |
Weighted average number of common shares outstanding – diluted |  | 99,438 |  |  | 99,384 |  |  | 95,366 |

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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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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