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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2019
Accounting Policies [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The shares used in the calculation of basic and diluted earnings per share, which have been adjusted to give effect to the 5% common stock dividends paid by the Company in December 2019, 2018 and 2017, are shown below:
(Dollars in thousands, except per share amounts) |  | Years ended December 31, |
|  | 2019 |  |  | 2018 |  |  | 2017 |
Net earnings available to common shareholders |  | $ | 10,662 |  |  | $ | 10,426 |  |  | $ | 4,369 |
Weighted average common shares outstanding - basic |  |  | 4,592,655 |  |  |  | 4,568,205 |  |  |  | 4,481,984 |
Assumed exercise of stock options |  |  | 13,841 |  |  |  | 15,908 |  |  |  | 77,880 |
Weighted average common shares outstanding - diluted |  |  | 4,606,496 |  |  |  | 4,584,113 |  |  |  | 4,559,864 |
Earnings per share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 2.32 |  |  | $ | 2.28 |  |  | $ | 0.97 |
Diluted |  | $ | 2.31 |  |  | $ | 2.27 |  |  | $ | 0.96 |

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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://fasb.org/us-gaap/role/ref/legacyRef -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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