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Earnings Per Common Share (Tables) | 9 Months Ended
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Sep. 30, 2016
Earnings Per Share [Abstract] |
Schedule of Earnings Per Share Basic and Diluted |
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2016 |  |  | 2015 |  |  | 2016 |  |  | 2015 |
Numerator—basic and diluted |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 21,691 |  |  | $ | 10,309 |  |  | $ | 78,419 |  |  | $ | 55,704 |
Denominator |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of common shares outstanding — basic |  |  | 41,239 |  |  |  | 41,094 |  |  |  | 40,856 |  |  |  | 40,771 |
Effect of dilutive stock options |  |  | 350 |  |  |  | 426 |  |  |  | 266 |  |  |  | 418 |
Effect of dilutive restricted shares |  |  | 476 |  |  |  | 462 |  |  |  | 483 |  |  |  | 493 |
Weighted average number of common shares outstanding — diluted |  |  | 42,065 |  |  |  | 41,982 |  |  |  | 41,605 |  |  |  | 41,682 |
Earnings per common share — basic |  | $ | 0.53 |  |  | $ | 0.25 |  |  | $ | 1.92 |  |  | $ | 1.37 |
Earnings per common share — diluted |  | $ | 0.52 |  |  | $ | 0.25 |  |  | $ | 1.88 |  |  | $ | 1.34 |
Antidilutive stock options and restricted shares |  |  | 753 |  |  |  | 1,360 |  |  |  | 1,595 |  |  |  | 1,685 |

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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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