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Earnings Per Share
 9 Months Ended
Sep. 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 September 30,Nine Months Ended September 30,
2024202320242023
(In thousands)
Weighted average shares:
Basic shares231,342 230,691 231,292 230,431 
Equity-based compensation plans882 1,060 896 983 
Diluted shares232,224 231,751 232,188 231,414 
The calculation of diluted earnings per share for the three and nine months ended September 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 nine months ended September 30, 2023.