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Note 10 - Earnings Per Share
 9 Months Ended
Sep. 30, 2016
Notes to Financial Statements  
Earnings Per Share [Text Block]
NOTE 10:     EARNINGS PER SHARE
 
Basic earnings per share are computed by dividing net earnings available to common shareholders (the numerator) by the weighted average number of common shares (the denominator) for the period presented. The computation of diluted earnings per share is similar 
to basic earnings per share, except that the denominator is increased to include the number of additional common shares that would have been outstanding if the potentially dilutive common shares had been issued.
 
Stock options to purchase 159,730 shares of common stock were outstanding and 79,730 were exercisable during the three and nine months ended September 30, 2016. Stock options to purchase 259,730 shares were outstanding and 147,230 were exercisable during the three and nine months ended September 30, 2015. For the three and nine months ended September 30, 2016, none of the outstanding options were included in the earnings per share calculation as their effect would have been antidilutive. For the three and nine months ended September 30, 2015, all outstanding options were included in the diluted earnings per share calculation because the average market price was higher than the exercise price.
 
The potentially dilutive common shares from warrants and options are calculated in accordance with the treasury stock method, which assumes that proceeds from the exercise of all warrants and options are used to repurchase common stock at market value. The amount of shares remaining after the proceeds are exhausted represents the potential dilutive effect of the securities.