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Earnings Per Share | 3 Months Ended
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Mar. 31, 2017
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The following table reconciles the numerators and denominators used in the calculation of basic and diluted earnings per share (EPS):
| Three Months Ended March 31,
| 2017 |  | 2016
Numerators: |  |  |
Numerator for both basic and diluted EPS, net income | $ | 97,556,741 |  |  | $ | 80,279,994 |
Denominators: |  |  |
Denominator for basic EPS, weighted-average shares outstanding | 287,408,900 |  |  | 289,210,621 |
Potentially dilutive shares resulting from stock plans | 4,070,938 |  |  | 2,105,732 |
Denominator for diluted EPS | 291,479,838 |  |  | 291,316,353 |
Shares related to stock plans not included in diluted average common shares outstanding because their effect would be anti-dilutive | 2,311 |  |  | 7,866,330 |

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