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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Factors Used in Computation of Earnings Per Share | The factors used in the earnings per share computation follow:
|  | Years Ended December 31, |
(Dollars in thousands) |  | 2017 |  |  | 2016 |  |  | 2015 |
Basic |  |  |  |  |  |  |  |  |  |  |  |
Net income to common stockholders |  | $ | 35,446 |  |  | $ | 19,813 |  |  | $ | 28,353 |
Weighted average common shares outstanding |  |  | 19,133,745 |  |  |  | 17,856,828 |  |  |  | 17,720,479 |
Basic earnings per common share |  | $ | 1.85 |  |  | $ | 1.11 |  |  | $ | 1.60 |
Diluted |  |  |  |  |  |  |  |  |  |  |  |
Net income to common stockholders |  | $ | 35,446 |  |  | $ | 19,813 |  |  | $ | 28,353 |
Dilutive effect of preferred stock |  |  | 774 |  |  |  | — |  |  |  | 780 |
Net income to common stockholders - diluted |  | $ | 36,220 |  |  | $ | 19,813 |  |  | $ | 29,133 |
Weighted average common shares outstanding |  |  | 19,133,745 |  |  |  | 17,856,828 |  |  |  | 17,720,479 |
Dilutive effects of: |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock |  |  | 68,079 |  |  |  | 110,565 |  |  |  | 79,821 |
Assumed exercises of stock options |  |  | 45,653 |  |  |  | 3,128 |  |  |  | — |
Assumed exercises of stock warrants |  |  | 82,567 |  |  |  | 83,010 |  |  |  | 48,238 |
Assumed conversion of Preferred A |  |  | 315,773 |  |  |  | — |  |  |  | 315,773 |
Assumed conversion of Preferred B |  |  | 354,471 |  |  |  | — |  |  |  | 360,578 |
Average shares and dilutive potential common shares |  |  | 20,000,288 |  |  |  | 18,053,531 |  |  |  | 18,524,889 |
Diluted earnings per common share |  | $ | 1.81 |  |  | $ | 1.10 |  |  | $ | 1.57 |
Shares that were not considered in computing diluted earnings per common share because they were antidilutive are as follows:
|  | Years Ended December 31, |
|  | 2017 |  |  | 2016 |  |  | 2015 |
Shares assumed to be converted from Preferred Stock Series A |  |  | — |  |  |  | 315,773 |  |  |  | — |
Shares assumed to be converted from Preferred Stock Series B |  |  | — |  |  |  | 360,578 |  |  |  | — |
Restricted stock awards |  |  | — |  |  |  | — |  |  |  | — |
Stock options |  |  | 57,926 |  |  |  | — |  |  |  | — |

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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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