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Earnings per Share (Tables) | 9 Months Ended
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Sep. 30, 2016
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] | The shares used in the calculation of basic and diluted earnings per share are shown below:
(Dollars in thousands, except per share amounts) |  | September 30 |  | September 30 |
|  | 2016 |  | 2015 |  | 2016 |  | 2015 |
Net earnings |  | $ | 2,094 |  | $ | 2,529 |  | $ | 6,616 |  | $ | 7,922 |
Weighted average common shares outstanding - basic (1) |  |  | 3,645,618 |  |  | 3,506,440 |  |  | 3,605,509 |  |  | 3,504,487 |
Assumed exercise of stock options (1) |  |  | 69,165 |  |  | 115,397 |  |  | 67,129 |  |  | 101,674 |
Weighted average common shares outstanding - diluted (1) |  |  | 3,714,783 |  |  | 3,621,837 |  |  | 3,672,638 |  |  | 3,611,251 |
Net earnings per share (1): |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 0.57 |  | $ | 0.72 |  | $ | 1.83 |  | $ | 2.26 |
Diluted |  | $ | 0.56 |  | $ | 0.70 |  | $ | 1.80 |  | $ | 2.19 |
(1) Share and per share values for the periods ended September 30, 2015 have been adjusted to give effect to the 5% stock dividend paid during December 2015.

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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