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Computation of Earnings Per Share | 3 Months Ended
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Mar. 31, 2021
Earnings Per Share [Abstract] |
Computation of Earnings Per Share | Computation of Earnings Per Share Basic earnings per share (“EPS”) is computed by dividing net income by the weighted average number of shares of Common Stock outstanding during the period. Diluted EPS reflects the potential dilution of securities that could share in earnings. Potential shares of common stock are excluded from the computation of diluted earnings per share when their effect would be anti-dilutive. The table below sets forth the calculation of basic and diluted income per share for the periods indicated (in thousands, except per share data).
| Three Months Ended |  |
| March 31, |  |
| 2021 |  | 2020 |  |  |  |
Numerator: |  |  |  |  |  |  |
Net income used for calculating basic and diluted income per share | $ | 164,100 |  |  | $ | 75,097 |  |  |  |  |
Denominator: |  |  |  |  |  |  |
Weighted average common shares used in the calculation of basic income per share | 88,352 |  |  | 89,219 |  |  |  |  |
Dilutive effect of outstanding awards associated with stock-based compensation plans (1) | 787 |  |  | 847 |  |  |  |  |
Shares used in the calculation of diluted income per share | 89,139 |  |  | 90,066 |  |  |  |  |
Basic income per share | $ | 1.86 |  |  | $ | 0.84 |  |  |  |  |
Diluted income per share | $ | 1.84 |  |  | $ | 0.83 |  |  |  |  |
(1)Certain potential shares of common stock were not included in the computation of diluted income per share because the effect would have been anti-dilutive. These potential shares of common stock totaled approximately 0.4 million and 0.7 million for the three months ended March 31, 2021, and 2020, respectively.

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