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Earnings Per Share (Tables)
 6 Months Ended
Jun. 30, 2022
Earnings Per Share [Abstract]  
Reconciliation of number of shares used in calculation of basic and diluted earning per share A reconciliation of the number of shares used in the calculation of basic and diluted earnings per share for the three and six months ended June 30, 2022 and 2021 follows:
Three Months Ended
June 30,		Six Months Ended
June 30,
2022202120222021
Weighted average number of common shares outstanding75,793,239 80,691,996 76,501,402 80,649,824 
Effect of non-participatory equity compensation23,880 34,442 23,880 34,442 
Weighted average number of common shares outstanding, including effect of dilutive securities75,817,119 80,726,438 76,525,282 80,684,266