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Accounting Policies (Tables) | 9 Months Ended
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Sep. 30, 2018
Accounting Policies [Abstract] |
Summary of Computation of Basic and Diluted Earnings Per Share | The following table shows computation of basic and diluted earnings per share.
|  | Three Months Ended |  |  | Nine Months Ended |
|  | September 30 |  |  | September 30 |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Basic earnings per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 13,065 |  |  | $ | 8,171 |  |  | $ | 39,984 |  |  | $ | 25,467 |
Weighted average common shares outstanding(1) |  |  | 38,365,379 |  |  |  | 33,870,240 |  |  |  | 38,340,012 |  |  |  | 33,489,681 |
Basic earnings per share |  | $ | 0.34 |  |  | $ | 0.24 |  |  | $ | 1.04 |  |  | $ | 0.76 |
Diluted earnings per share |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income available to common shareholders |  | $ | 13,065 |  |  | $ | 8,171 |  |  | $ | 39,984 |  |  | $ | 25,467 |
Weighted average common shares outstanding(1) |  |  | 38,365,379 |  |  |  | 33,870,240 |  |  |  | 38,340,012 |  |  |  | 33,489,681 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted stock |  |  | 47,603 |  |  |  | 55,123 |  |  |  | 43,926 |  |  |  | 50,686 |
Stock options |  |  | 121,988 |  |  |  | 147,546 |  |  |  | 119,465 |  |  |  | 143,329 |
Weighted average common shares outstanding |  |  | 38,534,970 |  |  |  | 34,072,909 |  |  |  | 38,503,403 |  |  |  | 33,683,696 |
|  | $ | 0.34 |  |  | $ | 0.24 |  |  | $ | 1.04 |  |  | $ | 0.75 |
(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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