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Earnings Per Share (Tables)
 12 Months Ended
Dec. 31, 2017
Text block1 [abstract]  
Schedule of Basic and Diluted Common Shares Outstanding, Calculated on Weighted Average Basis

The number of basic shares outstanding and diluted common shares, calculated on a weighted average basis, is as follows:

 

     December 31        December 31  
     2017      2016  
     #        #  
     

Basic shares outstanding

      113,991,507        107,006,168  

Share options (dilutive effect of 4,426,237 options; 2016 – 3,655,020 options)

      361,413        319,623  

Diluted shares

      114,352,920        107,325,791