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Per Share Data
6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Per Share Data
3. Per Share Data
Basic earnings per share is computed using net income attributable to common shareholders and the weighted average number of common shares outstanding. Diluted earnings per share reflects common shares issuable from the assumed conversion of common share options and unvested share awards, and units convertible into common shares. Only those items having a dilutive impact on our basic earnings per share are included in diluted earnings per share. Our unvested share-based awards are considered participating securities and are reflected in the calculation of basic and diluted earnings per share using the two-class method. The number of common share equivalent securities excluded from the diluted earnings per share calculation were approximately 1.8 million and 1.9 million for the three and six months ended June 30, 2021 and approximately 2.0 million and 1.9 million for the three and six months ended June 30, 2020. These securities, which include common share options and share awards granted and units convertible into common shares, were excluded from the diluted earnings per share calculations as they are anti-dilutive. The following table presents information necessary to calculate basic and diluted earnings per share for the periods indicated:
 Three Months Ended
June 30,
Six Months Ended
June 30,
(in thousands, except per share amounts)2021202020212020
Earnings per common share calculation – basic
Income from continuing operations attributable to common shareholders$30,179 $16,477 $61,526 $59,761 
Amount allocated to participating securities(50)(35)(82)(134)
Net income attributable to common shareholders – basic$30,129 $16,442 $61,444 $59,627 
Total earnings per common share – basic$0.30 $0.17 $0.61 $0.60 
Weighted average number of common shares outstanding – basic100,701 99,399 100,127 99,348 
Earnings per common share calculation – diluted
Net income attributable to common shareholders – diluted$30,129 $16,442 $61,444 $59,627 
Total earnings per common share – diluted$0.30 $0.17 $0.61 $0.60 
Weighted average number of common shares outstanding – basic100,701 99,399 100,127 99,348 
Incremental shares issuable from assumed conversion of:
Common share options and share awards granted66 70 46 
Weighted average number of common shares outstanding – diluted100,767 99,408 100,197 99,394