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Earnings Per Share | 6 Months Ended
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Jun. 30, 2021
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share The calculation of basic earnings per share is based on the weighted average number of common shares considered outstanding during the periods. The calculation of diluted earnings per share reflects the effect of all potentially dilutive securities (principally outstanding stock options and restricted stock grants). Securities that are anti-dilutive have been excluded and are not significant. The number of weighted average shares used in the calculation of basic earnings per share and diluted earnings per share was as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
| (In thousands)
Weighted average shares: |  |  |  |  |  |  |
Basic shares | 230,828 |  |  | 229,225 |  |  | 230,632 |  |  | 229,094 |
Equity-based compensation plans | 2,013 |  |  | 1,156 |  |  | 1,937 |  |  | 1,532 |
Diluted shares | 232,841 |  |  | 230,381 |  |  | 232,569 |  |  | 230,626 |

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