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Earnings Per Share (Tables)
9 Months Ended
Sep. 30, 2022
Earnings Per Share [Abstract]  
Reconciliation of Numerator and Denominator of Basic Earnings Per Share with that of Diluted Earnings Per Share
The reconciliation of the numerator and denominator of basic earnings per share with that of diluted earnings per share is presented as follows:
 
    
Three Months Ended

September 30
    
Nine Months Ended

September 30
 
    
2022
    
2021
    
2022
    
2021
 
Distributed earnings allocated to common stock
   $ 48,333      $ 45,084      $ 145,678      $ 135,237  
Undistributed earnings allocated to common stock
     53,979        46,803        133,442        157,810  
    
 
 
    
 
 
    
 
 
    
 
 
 
Net earnings allocated to common shareholders
   $ 102,312      $ 91,887      $ 279,120      $ 293,047  
    
 
 
    
 
 
    
 
 
    
 
 
 
Average common shares outstanding
     134,182,248        128,762,815        134,947,674        128,716,450  
Equivalents from stock options
     371,317        197,405        303,625        217,832  
    
 
 
    
 
 
    
 
 
    
 
 
 
Average diluted shares outstanding
     134,553,565        128,960,220        135,251,299        128,934,282  
    
 
 
    
 
 
    
 
 
    
 
 
 
Earnings per basic common share
   $ 0.76      $ 0.71      $ 2.07      $ 2.28  
Earnings per diluted common share
   $ 0.76      $ 0.71      $ 2.06      $ 2.27