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Note 6 - Loss per Share
 6 Months Ended
Jun. 30, 2019
Notes to Financial Statements  
Earnings Per Share [Text Block]
6.
Loss
Per Share
 
Basic loss per share excludes dilution and is computed by dividing loss available to common shareholders by the weighted-average number of shares outstanding for the period. Diluted earnings (loss) per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock, except for periods when the Company reports a net loss because the inclusion of such items would be antidilutive. The antidilutive effect of
185,234
shares and
540,462
shares from stock options were excluded from diluted shares for the
three
months ended
June 30, 2019
and
2018,
respectively, and the antidilutive effect of
229,741
shares and
559,498
shares from stock options were excluded from diluted shares for the
six
months ended
June 30, 2019
and
2018,
respectively.
 
The following is a reconciliation of the amounts used in calculating basic and diluted net loss per common share:
 
                   
Per share
  
   
Net loss
    
Shares
    
amount
  
Basic net loss per common share for the three months ended June 30, 2019:
                        
Loss available to common shareholders
   $
(208,602
 )    
11,207,804
     $
(0.02
 )
Effect of dilutive stock options
    
-
      
-
      
-
  
Diluted net loss per common share for the three months ended June 30, 2019
   $
(208,602
 )    
11,207,804
     $
(0.02
 )
                         
Basic net loss per common share for the three months ended June 30, 2018:
                        
Loss available to common shareholders
   $
(5,882
 )    
11,201,760
     $
-
  
Effect of dilutive stock options
    
-
      
-
      
-
  
Diluted net loss per common share for the three months ended June 30, 2018
   $
(5,882
 )    
11,201,760
     $
-
  
                         
Basic net loss per common share for the six months ended June 30, 2019:
                        
Loss available to common shareholders
   $
(399,455
 )    
11,204,799
     $
(0.04
 )
Effect of dilutive stock options
    
-
      
-
      
-
  
Diluted net loss per common share for the six months ended June 30, 2019
   $
(399,455
 )    
11,204,799
     $
(0.04
 )
                         
Basic net loss per common share for the six months ended June 30, 2018:
                        
Loss available to common shareholders
   $
(39,158
 )    
11,201,760
     $
-
  
Effect of dilutive stock options
    
-
      
-
      
-
  
Diluted net loss per common share for the six months ended June 30, 2018
   $
(39,158
 )    
11,201,760
     $
-