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Nature of Operations and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract] |
Summary of Computation of Basic and Diluted Earnings Per Share | The following table shows computation of basic and diluted earnings per share.
|  | Years Ended December 31 |
|  | 2018 |  |  |  | 2017 |  |  |  | 2016 |
Basic earnings per share |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 53,117 |  |  |  | $ | 33,117 |  |  |  | $ | 23,912 |
Less: Preferred stock dividends |  |  | — |  |  |  |  | — |  |  |  |  | 42 |
Net income available to common shareholders |  | $ | 53,117 |  |  |  | $ | 33,117 |  |  |  | $ | 23,870 |
Weighted average common shares outstanding (1) |  |  | 38,347,059 |  |  |  |  | 34,553,736 |  |  |  |  | 29,981,592 |
Basic earnings per share |  | $ | 1.39 |  |  |  | $ | 0.96 |  |  |  | $ | 0.80 |
Diluted earnings per share |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders |  | $ | 53,117 |  |  |  | $ | 33,117 |  |  |  | $ | 23,870 |
Weighted average common shares outstanding (1) |  |  | 38,347,059 |  |  |  |  | 34,553,736 |  |  |  |  | 29,981,592 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock |  |  | 36,185 |  |  |  |  | 46,981 |  |  |  |  | 39,829 |
Stock options |  |  | 111,987 |  |  |  |  | 159,721 |  |  |  |  | 102,193 |
Weighted average common shares outstanding |  |  | 38,495,231 |  |  |  |  | 34,760,438 |  |  |  |  | 30,123,614 |
|  | $ | 1.38 |  |  |  | $ | 0.95 |  |  |  | $ | 0.79 |
(1) | Adjusted for 3:2 stock split on June 15, 2018

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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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