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Earnings Per Share
 9 Months Ended
Sep. 30, 2022
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 September 30,Nine Months Ended September 30,
2022202120222021
(In thousands)
Weighted average shares:
Basic shares229,500 231,171 230,360 230,811 
Equity-based compensation plans1,214 1,829 1,315 1,901 
Diluted shares230,714 233,000 231,675 232,712