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Earnings Per Share
 6 Months Ended
Jun. 30, 2022
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share
The numerator used in the calculation of both basic and diluted earnings per common share is net income. The denominator used in the calculation of basic earnings per common share is the weighted average number of common shares outstanding during the period. The denominator used in the calculation of diluted earnings per common share is derived by adjusting basic shares outstanding for the dilutive effect of potential common shares outstanding, which consist of time and performance based stock awards and employee stock purchase plan shares.
The following includes the computation of the denominator for basic and diluted weighted-average shares outstanding for the three and six months ended June 30, 2022 and 2021:
Three Months Ended June 30,Six Months Ended June 30,
(in thousands)2022202120222021
Weighted Average Common Shares Outstanding – Basic41,597 41,500 41,573 41,478 
Effect of Dilutive Securities:
Stock Performance Awards259 223 239 183 
Restricted Stock Awards85 75 94 80 
Employee Stock Purchase Plan Shares and Other3 20 1 18 
Dilutive Effect of Potential Common Shares347 318 334 281 
Weighted Average Common Shares Outstanding – Diluted41,944 41,818 41,907 41,759 
The amount of shares excluded from diluted weighted-average common shares outstanding because such shares were anti-dilutive was not material for the three and six months ended June 30, 2022 and 2021.