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Earnings Per Share | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The following table details the reconciliation of basic earnings per share to diluted earnings per share:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
|  | 2018 |  | 2017 |  | 2018 |  | 2017
|  |  |  | As Adjusted |  |  |  | As Adjusted
Numerator for basic and diluted earnings per share: |  |  |  |  |  |  |  |
Net income |  | $ | 39,161 |  |  | $ | 31,770 |  |  | $ | 76,986 |  |  | $ | 64,539 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted-average basic common shares outstanding |  | 38,390 |  |  | 37,154 |  |  | 38,416 |  |  | 37,144 |
Assumed conversion of dilutive securities: |  |  |  |  |  |  |  |
Stock options |  | 1,834 |  |  | 2,047 |  |  | 1,834 |  |  | 2,067 |
Denominator for diluted earnings per share - Adjusted weighted-average shares |  | 40,224 |  |  | 39,201 |  |  | 40,250 |  |  | 39,211 |
Earnings per common share: |  |  |  |  |  |  |  |  |  |  |  |
Basic |  | $ | 1.02 |  |  | $ | 0.86 |  |  | $ | 2.00 |  |  | $ | 1.74 |
Diluted |  | $ | 0.97 |  |  | $ | 0.81 |  |  | $ | 1.91 |  |  | $ | 1.65 |
For the three and six months ended June 30, 2018, stock options representing the right to purchase common stock of approximately 742,000 and 926,000 shares were not included in the computation of diluted earnings per share because their inclusion would have had an anti-dilutive effect. For the three and six months ended June 30, 2017, stock options representing the right to purchase common stock of approximately 1,251,000 and 1,205,000 shares were not included in the computation of diluted earnings per share because their inclusion would have had an anti-dilutive effect.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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