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Earnings Per Share
 9 Months Ended
Sep. 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 nine months ended September 30, 2022 and 2021:
Three Months Ended September 30,Nine Months Ended September 30,
(in thousands)2022202120222021
Weighted Average Common Shares Outstanding – Basic41,600 41,504 41,582 41,487 
Effect of Dilutive Securities:
Stock Performance Awards276 262 251 209 
Restricted Stock Awards97 88 96 82 
Employee Stock Purchase Plan Shares and Other1 15 1 17 
Dilutive Effect of Potential Common Shares374 365 348 308 
Weighted Average Common Shares Outstanding – Diluted41,974 41,869 41,930 41,795 
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 nine months ended September 30, 2022 and 2021.