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Note 3 - Basic and Diluted Shares
9 Months Ended
Sep. 30, 2018
Notes to Financial Statements  
Earnings Per Share [Text Block]
3.
BASIC AND DILUTED SHARES
 
Basic and diluted weighted-average shares outstanding for the periods ended
September 30, 2018
and
2017
were as follows:
 
   
Three
Months
Ended
   
Nine Months
Ended
 
   
September
30,
   
September
30,
 
   
2018
   
2017
   
2018
   
2017
 
                                 
Basic and diluted
   
19,102,899
     
19,022,403
     
19,084,242
     
18,983,049
 
Potentially dilutive
   
27,500
     
27,500
     
27,500
     
27,500
 
 
 
Basic net income (loss) per common share is computed by dividing net income (loss) by the weighted-average number of common shares outstanding. Diluted net income (loss) per common share is computed similar to basic net income (loss) per common share except that the denominator is increased to include the number of additional common shares that would have been outstanding if the dilutive potential common shares from share-based compensation arrangements had been issued.
 
Potentially dilutive shares arise from non-qualified stock options to purchase common stock. The treasury stock method is utilized to determine the number of potentially dilutive shares related to the outstanding non-qualified stock options.