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Note 2 - Earnings Per Share | 12 Months Ended
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Dec. 31, 2017
Notes to Financial Statements |
Earnings Per Share [Text Block] |
2. | EARNINGS PER SHARE
There are no convertible securities that would affect the numerator in calculating basic and diluted earnings per share; therefore, net income as presented on the Consolidated Statement of Income will be used as the numerator. The following table sets forth the composition of the weighted-average common shares (denominator) used in the basic and diluted earnings per share computation for the year ended December 31:
|  | 2017 |  |  | 2016 |  |  | 2015 |
Weighted-average common shares outstanding |  |  | 3,415,115 |  |  |  | 2,494,022 |  |  |  | 2,251,365 |
Average treasury stock shares |  |  | (386,165 | ) |  |  | (386,165 | ) |  |  | (236,399 | )
Weighted-average common shares and common stock equivalents used to calculate basic earnings per share |  |  | 3,028,950 |  |  |  | 2,107,857 |  |  |  | 2,014,966 |
Additional common stock equivalents (stock options) used to calculate diluted earnings per share |  |  | 23,635 |  |  |  | 11,357 |  |  |  | 9,154 |
Weighted-average common shares and common stock equivalents used to calculate diluted earnings per share |  |  | 3,052,585 |  |  |  | 2,119,214 |  |  |  | 2,024,120 |
Options to purchase 19,750 shares of common stock at prices ranging from $17.55 to $23.00 were outstanding during the year ended December 31, 2017. Also outstanding were 14,601 shares of restricted stock units. None of the outstanding options or RSU’s were anti-dilutive. Options to purchase 29,324 shares of common stock at prices ranging from $17.55 to $ 37.48 were outstanding during the year ended December 31, 2016. Of those options, 29,324 were considered dilutive based on the average market price exceeding the strike price for the year ended December 31, 2016, and no options were anti-dilutive. Options to purchase 31,949 shares of common stock at prices ranging from $17.55 to $40.24 were outstanding during the year ended December 31, 2015. Of those options, 27,250 were considered dilutive based on the average market price exceeding the strike price for the year ended December 31, 2015, and 4,699 options were anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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