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Earnings Per Share (Tables) | 3 Months Ended
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Mar. 31, 2018
Earnings Per Share [Abstract] |
Computation of reconciliation of basic earnings per share to diluted earnings per share | The following table details the reconciliation of basic earnings per share to diluted earnings per share:
|  | Three Months Ended March 31,
|  | 2018 |  | 2017
|  |  |  | As Adjusted
Numerator for basic and diluted earnings per share: |  |  |  |
Net income |  | $ | 37,825 |  |  | $ | 32,769 |
Denominator: |  |  |  |  |  |
Weighted-average basic common shares outstanding |  | 38,002 |  |  | 36,845 |
Assumed conversion of dilutive securities: |  |  |  |
Stock options |  | 1,834 |  |  | 2,087 |
Denominator for diluted earnings per share - Adjusted weighted-average shares |  | 39,836 |  |  | 38,932 |
Earnings per common share: |  |  |  |  |  |
Basic |  | $ | 1.00 |  |  | $ | 0.89 |
Diluted |  | $ | 0.95 |  |  | $ | 0.84 |

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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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