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Earnings per Common Share
6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Earnings per Common Share Earnings per Common ShareBasic earnings per share (EPS) is computed by dividing net income by the weighted-average number of common shares outstanding for the period. Diluted EPS is similarly calculated except that the common shares outstanding for the period is increased using the treasury stock method to reflect the potential dilution that could occur if outstanding stock awards were vested at the end of the applicable period. Anti-dilutive shares represent potentially dilutive securities that are excluded from the computation of diluted income or loss per share as their impact would be anti-dilutive.
The following is a calculation of basic and diluted weighted-average shares outstanding:
Three Months Ended 
June 30,
Six Months Ended 
June 30,
(In thousands)2021202020212020
Weighted-average shares - basic399,586 398,576 399,355 398,460 
Dilution effect of stock awards at end of period2,620 2,703 2,385 1,759 
Weighted-average shares - diluted402,206 401,279 401,740 400,219 
The following table presents weighted-average shares excluded from diluted EPS due to the anti-dilutive effect:
Three Months Ended 
June 30,
Six Months Ended 
June 30,
(In thousands)2021202020212020
Weighted-average stock awards excluded from diluted EPS due to the anti-dilutive effect calculated using the treasury stock method— 1,358 942