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Earnings Per Share
 9 Months Ended
Sep. 30, 2021
Earnings Per Share [Abstract]  
Earnings per Share
NOTE 3 – EARNINGS PER SHARE
Basic earnings per share is based on the weighted average number of common shares outstanding during the period. Diluted earnings per share includes the effect of options that are dilutive and outstanding during the period under the treasury stock method. Per share amounts are computed as follows:
 
                                 
    
Three Months Ended
September 30
     
Nine Months Ended
September 30
  
    
2021
     
2020
     
2021
     
2020
  
Numerator (in millions):
                                    
Net income available to common stockholders
    $
23.4
      $
12.7
      $
69.2
      $
6.1
  
    
 
 
     
 
 
     
 
 
     
 
 
  
Denominator (in thousands):
                                    
Weighted average common shares outstanding
     
24,643
       
24,570
       
24,624
       
24,555
  
Dilutive effect of stock options and awards
     
221
       
150
       
248
       
203
  
    
 
 
     
 
 
     
 
 
     
 
 
  
Denominator for diluted earnings per share
     
24,864
       
24,720
       
24,872
       
24,758
  
    
 
 
     
 
 
     
 
 
     
 
 
  
Net income per share, basic:
    $
0.95
      $
0.52
      $
2.81
      $
0.25
  
    
 
 
     
 
 
     
 
 
     
 
 
  
Net income per share, diluted:
    $
0.94
      $
0.51
      $
2.78
      $
0.25
  
    
 
 
     
 
 
     
 
 
     
 
 
  
In the three and nine months ended September 30, 2021, the average number of anti-dilutive options excluded from the calculation of diluted earnings per share were 19,191 and 14,649, respectively (three and nine months ended September 30, 2020 – 17,980 and 23,420, respectively).