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Earnings per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Computation of Basic and Diluted Earnings per Common Share | The factors used in the earnings per share computation follow.
|  | 2017 |  |  | 2016 |  |  | 2015 |
Basic |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 15,872 |  |  | $ | 17,217 |  |  | $ | 12,745 |
Preferred stock dividends |  |  | 1,244 |  |  |  | 1,501 |  |  |  | 1,577 |
Net income available to common shareholders—basic |  | $ | 14,628 |  |  | $ | 15,716 |  |  | $ | 11,168 |
Weighted average common shares outstanding—basic |  |  | 9,906,856 |  |  |  | 8,010,399 |  |  |  | 7,822,369 |
Basic earnings per share |  | $ | 1.48 |  |  | $ | 1.96 |  |  | $ | 1.43 |
Diluted |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders—basic |  | $ | 14,628 |  |  | $ | 15,716 |  |  | $ | 11,168 |
Preferred stock dividends on convertible preferred stock |  |  | 1,244 |  |  |  | 1,501 |  |  |  | 1,577 |
Net income available to common shareholders—diluted |  | $ | 15,872 |  |  | $ | 17,217 |  |  | $ | 12,745 |
Weighted average common shares outstanding for earnings per common share basic |  |  | 9,906,856 |  |  |  | 8,010,399 |  |  |  | 7,822,369 |
Add: dilutive effects of convertible preferred shares |  |  | 2,445,760 |  |  |  | 2,940,562 |  |  |  | 3,095,966 |
Average shares and dilutive potential common shares outstanding—diluted |  |  | 12,352,616 |  |  |  | 10,950,961 |  |  |  | 10,918,335 |
Diluted earnings per share |  | $ | 1.28 |  |  | $ | 1.57 |  |  | $ | 1.17 |

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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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