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Earnings Per Share
 12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
Earnings Per Share Earnings Per Share
The numerator used in the calculation of both basic and diluted earnings per share is net income. The denominator used in the calculation of basic earnings per share is the weighted-average number of shares outstanding during the period. The denominator used in the calculation of diluted earnings per share is derived by adjusting basic shares outstanding for the dilutive effect of potential 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 years ended December 31, 2022, 2021 and 2020:
(in thousands)202220212020
Weighted Average Common Shares Outstanding – Basic41,586 41,491 40,710 
Effect of Dilutive Securities:
Stock Performance Awards248 226 116 
Restricted Stock Awards95 87 63 
Employee Stock Purchase Plan Shares and Other2 14 16 
Dilutive Effect of Potential Common Shares345 327 195 
Weighted Average Common Shares Outstanding – Diluted41,931 41,818 40,905 
The amount of shares excluded from diluted weighted-average common shares outstanding because such shares were anti-dilutive was not material for the years ended December 31, 2022, 2021 and 2020.