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Earnings Per Common Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted |
|  | For the Year Ended December 31,
|  | 2017 |  | 2016 |  | 2015
| (Dollars in Thousands, Except Share Data)
Basic earnings per common share |  |  |  |  |  |
Net income |  | $ | 11,905 |  |  | $ | 14,909 |  |  | $ | 16,514 |
Less: earnings allocated to participating securities |  | 162 |  |  | 219 |  |  | 273 |
Basic earnings allocated to common shareholders |  | $ | 11,743 |  |  | $ | 14,690 |  |  | $ | 16,241 |
Weighted-average common shares outstanding, excluding participating securities |  | 8,612,770 |  |  | 8,573,722 |  |  | 8,549,176 |
Basic earnings per common share |  | $ | 1.36 |  |  | $ | 1.71 |  |  | $ | 1.90 |
Diluted earnings per common share |  |  |  |  |  |
Earnings allocated to common shareholders, diluted |  | $ | 11,743 |  |  | $ | 14,690 |  |  | $ | 16,241 |
Weighted-average common shares outstanding, excluding participating securities |  | 8,612,770 |  |  | 8,573,722 |  |  | 8,549,176 |
Dilutive effect of share-based awards |  | — |  |  | — |  |  | 1,146 |
Weighted-average diluted common shares outstanding, excluding participating securities |  | 8,612,770 |  |  | 8,573,722 |  |  | 8,550,322 |
Diluted earnings per common share |  | $ | 1.36 |  |  | $ | 1.71 |  |  | $ | 1.90 |

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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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