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Note 3 - Basic and Diluted Shares
9 Months Ended
Sep. 30, 2016
Notes to Financial Statements  
Earnings Per Share [Text Block]
3.
     
BASIC AND DILUTED SHARES
 
Basic and diluted weighted-average shares outstanding for the three and nine months ended September 30, 2016 and 2015 were as follows:
 
 
 
 
Three Months Ended
 
 
Nine Months Ended
 
 
 
September 30,
 
 
September 30,
 
 
 
2016
 
 
2015
 
 
2016
 
 
2015
 
Basic and diluted
    18,914,307       18,852,479       18,935,635       18,831,499  
Potentially dilutive
    25,281       27,500       25,281       27,500  
 
Basic net income per share is computed by dividing net income by the weighted-average number of common shares outstanding. Diluted net income per share is computed similar to basic net income per 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 and non-vested restricted stock. The treasury stock method is applied to determine the number of potentially dilutive shares for non-vested restricted stock and stock options assuming that the shares of non-vested restricted stock are issued for an amount based on the grant date market price of the shares and that the outstanding stock options are exercised.