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Weighted Average Shares Outstanding
12 Months Ended
Dec. 31, 2021
Weighted Average Shares Outstanding [Abstract]  
Weighted Average Shares Outstanding Weighted Average Shares Outstanding
 
Net income per common share is computed in accordance with accounting standards related to earnings per share. Basic earnings per share is calculated using the weighted-average number of common shares outstanding during the year. Share-based payment awards that entitle their holders to receive nonforfeitable dividends before vesting should be considered participating securities and, as such, should be included in the calculation of basic earnings per share. The Company’s restricted stock unit awards which contain nonforfeitable rights to dividends are considered participating securities. Diluted earnings per share reflects the assumed exercise and conversion of all dilutive securities. Shares held by the Retirement Savings Plan are considered outstanding for both basic and diluted earnings per share. There are no adjustments to net income for purposes of computing income available to common stockholders for the years ended December 31, 2021, 2020 or 2019. A reconciliation of
the weighted-average number of common shares outstanding used in the calculation of basic and diluted earnings per share follows:
 Weighted-Average Common Shares Outstanding
 202120202019
Basic50,926,374 50,880,846 51,213,518 
Dilutive effect of:
Stock options74,798 66,738 176,984 
Performance share awards77,891 150,002 242,667 
Diluted51,079,063 51,097,586 51,633,169 

The calculation of weighted-average diluted shares outstanding excludes all anti-dilutive shares. During 2021, 2020 and 2019 the Company excluded 533,177, 484,835 and 280,254 stock awards, respectively, from the calculation of diluted weighted-average shares outstanding as the stock awards were considered anti-dilutive.