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Earnings Per Share
 6 Months Ended
Jun. 30, 2024
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). 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,
2024202320242023
(In thousands)
Weighted average shares:
Basic shares231,437 230,478 231,267 230,302 
Equity-based compensation plans867 783 903 943 
Diluted shares232,304 231,261 232,170 231,245 
The calculation of diluted earnings per share for the three and six months ended June 30, 2024 excluded an immaterial number of stock options because the exercise prices of these stock options exceeded the average market price of the Company’s common shares, and the effect of their inclusion would have been antidilutive. There were no antidilutive shares for the three and six months ended June 30, 2023.