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Nature of Operations and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2017
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 |
|  | 2017 |  |  | 2016 |  |  | 2015 |
Basic earnings per share |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 33,117 |  |  | $ | 23,912 |  |  | $ | 20,549 |
Less: Preferred stock dividends |  |  | — |  |  |  | 42 |  |  |  | 125 |
Net income available to common shareholders |  | $ | 33,117 |  |  | $ | 23,870 |  |  | $ | 20,424 |
Weighted average common shares outstanding(1) |  |  | 23,035,824 |  |  |  | 19,987,728 |  |  |  | 15,765,444 |
Basic earnings per share |  | $ | 1.44 |  |  | $ | 1.19 |  |  | $ | 1.30 |
Diluted earnings per share |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders |  | $ | 33,117 |  |  | $ | 23,870 |  |  | $ | 20,424 |
Weighted average common shares outstanding(1) |  |  | 23,035,824 |  |  |  | 19,987,728 |  |  |  | 15,765,444 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Warrants |  |  | — |  |  |  | — |  |  |  | 330,474 |
Restricted stock |  |  | 31,321 |  |  |  | 26,553 |  |  |  | 48,015 |
Stock options |  |  | 106,481 |  |  |  | 68,129 |  |  |  | 53,379 |
Weighted average shares outstanding |  |  | 23,173,626 |  |  |  | 20,082,410 |  |  |  | 16,197,312 |
Diluted earnings per share |  | $ | 1.43 |  |  | $ | 1.19 |  |  | $ | 1.26 |
(1) | Adjusted for 3:2 stock split on November 14, 2016

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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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