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EARNINGS PER SHARE
6 Months Ended
Jun. 30, 2022
Earnings Per Share [Abstract]  
EARNINGS PER SHARE EARNINGS PER SHARE
 
Basic and diluted earnings per common share (“EPS”) for the three and six months ended June 30, 2022 and 2021 were:
Three Months Ended June 30,Six Months Ended June 30,
2022202120222021
(in thousands, except per share data)
Numerator:  
Net income
$160,315 $318,954 $233,075 $417,352 
Denominator:  
Weighted average common shares outstanding - basic
61,590 63,595 60,712 64,526 
Plus: Dilutive effect of stock options and unvested restricted stock units
646 1,045 859 1,218 
Weighted average common shares outstanding - diluted
62,236 64,640 61,571 65,744 
Net income per common share:
  
Basic$2.60 $5.02 $3.84 $6.47 
Diluted$2.58 $4.93 $3.79 $6.35 

In the three months ended June 30, 2022 and 2021, 0.4 million and an insignificant number of outstanding shares, respectively, issued under share-based compensation awards were anti-dilutive and, therefore, excluded from the calculation of diluted EPS. In the six months ended June 30, 2022 and 2021, 0.2 million and an insignificant number of outstanding shares, respectively, issued under share-based compensation awards were anti-dilutive and, therefore, excluded from the calculation of diluted EPS.