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Earnings Per Share
 12 Months Ended
Dec. 31, 2022
Earnings Per Share [Abstract]  
Earnings Per Share 16.    Earnings Per Share

The computation of earnings per share follows (in thousands, except per share data):

Net Income

For the Years Ended December 31,

Net Income

Shares

Earnings per Share

2022

Earnings

$

249,624 

14,929 

$

16.72 

Dilutive stock options

-

130 

Nonvested stock awards

-

40 

Diluted earnings

$

249,624 

15,099 

$

16.53 

2021

Earnings

$

268,550 

15,671 

$

17.14 

Dilutive stock options

-

221 

Nonvested stock awards

-

46 

Diluted earnings

$

268,550 

15,938 

$

16.85 

2020

Earnings

$

319,466 

15,955 

$

20.02 

Dilutive stock options

-

368 

Nonvested stock awards

-

75 

Diluted earnings

$

319,466 

16,398 

$

19.48 

During 2022, 891,000 stock options were excluded from the computation of diluted earnings per share as their exercise prices were greater than the average market price during most of the year. During 2021, 617,000 stock options were also excluded. During 2020, 566,000 stock options were also excluded.