| Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] |
A reconciliation of the numerators and denominators of the basic and diluted earnings per common share computations for the three and six months ended June 30, 2017 and 2016 are as follows: | | | Three Months Ended | | | Six Months Ended | | | | June 30, | | | June 30, | | | (Dollars in thousands, except per share data) | | 2017 | | | 2016 | | | 2017 | | | 2016 | | | Basic earnings per common share: | | | | | | | | | | | | | | | | | | Net income as reported | | $ | 2,529 | | | $ | 2,242 | | | $ | 4,827 | | | $ | 4,486 | | | Weighted average common shares outstanding | | | 2,864,246 | | | | 2,859,003 | | | | 2,863,704 | | | | 2,856,938 | | | Basic earnings per common share | | $ | 0.89 | | | $ | 0.78 | | | $ | 1.69 | | | $ | 1.57 | | | Diluted earnings per common share: | | | | | | | | | | | - | | | | | | | Net income as reported | | $ | 2,529 | | | $ | 2,242 | | | $ | 4,827 | | | $ | 4,486 | | | Weighted average common shares outstanding | | | 2,864,246 | | | | 2,859,003 | | | | 2,863,704 | | | | 2,856,938 | | | Add: Dilutive effect of assumed stock option exercises | | | 146 | | | | 750 | | | | 143 | | | | 750 | | | Weighted average common and dilutive potential common shares outstanding | | | 2,864,392 | | | | 2,859,753 | | | | 2,863,847 | | | | 2,857,688 | | | Diluted earnings per common share | | $ | 0.89 | | | $ | 0.78 | | | $ | 1.69 | | | $ | 1.57 | |
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