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Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Factors Used in Computation of Earnings Per Share | The factors used in the earnings per share computation follow:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
(Dollars in thousands) |  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Basic |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income to common stockholders |  | $ | 8,975 |  |  | $ | 9,587 |  |  | $ | 33,045 |  |  | $ | 29,335 |
Weighted average common shares outstanding |  |  | 26,178,194 |  |  |  | 19,811,577 |  |  |  | 24,159,543 |  |  |  | 18,600,009 |
Basic earnings per common share |  | $ | 0.34 |  |  | $ | 0.48 |  |  | $ | 1.37 |  |  | $ | 1.58 |
Diluted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income to common stockholders |  | $ | 8,975 |  |  | $ | 9,587 |  |  | $ | 33,045 |  |  | $ | 29,335 |
Dilutive effect of preferred stock |  |  | 195 |  |  |  | 195 |  |  |  | 578 |  |  |  | 580 |
Net income to common stockholders - diluted |  | $ | 9,170 |  |  | $ | 9,782 |  |  | $ | 33,623 |  |  | $ | 29,915 |
Weighted average common shares outstanding |  |  | 26,178,194 |  |  |  | 19,811,577 |  |  |  | 24,159,543 |  |  |  | 18,600,009 |
Dilutive effects of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assumed conversion of Preferred A |  |  | 315,773 |  |  |  | 315,773 |  |  |  | 315,773 |  |  |  | 315,773 |
Assumed conversion of Preferred B |  |  | 354,471 |  |  |  | 354,471 |  |  |  | 354,471 |  |  |  | 354,471 |
Assumed exercises of stock warrants |  |  | — |  |  |  | 54,476 |  |  |  | — |  |  |  | 110,089 |
Assumed exercises of stock options |  |  | 90,320 |  |  |  | 45,788 |  |  |  | 86,728 |  |  |  | 42,084 |
Restricted stock awards |  |  | 45,796 |  |  |  | 63,384 |  |  |  | 55,087 |  |  |  | 65,999 |
Restricted stock units |  |  | 7,276 |  |  |  | — |  |  |  | 2,706 |  |  |  | — |
Performance stock units |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Average shares and dilutive potential common shares |  |  | 26,991,830 |  |  |  | 20,645,469 |  |  |  | 24,974,308 |  |  |  | 19,488,425 |
Diluted earnings per common share |  | $ | 0.34 |  |  | $ | 0.47 |  |  | $ | 1.35 |  |  | $ | 1.53 |
Schedule of Shares not Considered in Computing Diluted Earnings per Common Share | Shares that were not considered in computing diluted earnings per common share because they were antidilutive are as follows:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Shares assumed to be converted from Preferred Stock Series A |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Shares assumed to be converted from Preferred Stock Series B |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Stock options |  |  | 51,952 |  |  |  | 58,442 |  |  |  | 51,952 |  |  |  | 58,442 |
Restricted stock awards |  |  | 14,513 |  |  |  | — |  |  |  | 14,513 |  |  |  | — |
Restricted stock units |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Performance stock units |  |  | 59,658 |  |  |  | — |  |  |  | 59,658 |  |  |  | — |

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- Definition Tabular disclosure of securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) in the future that were not included in the computation of diluted EPS because to do so would increase EPS amounts or decrease loss per share amounts for the period presented, by antidilutive securities. + 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 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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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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