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Common Stock (Tables)
12 Months Ended
Dec. 31, 2022
Equity [Abstract]  
Common Stock and Treasury Stock Activity The number of shares of common stock and treasury stock and the share activity for 2022 and 2021 were as follows:

 

 

 

Common Shares

 

 

 

Treasury Shares

 

 

 

2022

 

 

 

2021

 

 

 

2022

 

 

 

2021

 

Balance at the beginning of the year

 

 

135,064,296

 

 

 

 

138,660,154

 

 

 

 

50,252,566

 

 

 

 

45,406,158

 

Stock plan shares issued

 

 

856,175

 

 

 

 

1,250,550

 

 

 

 

 

 

 

 

 

Shares surrendered by optionees

 

 

(316,450

)

 

 

 

(144,280

)

 

 

 

316,450

 

 

 

 

144,280

 

Common stock repurchases

 

 

(7,563,462

)

 

 

 

(4,702,128

)

 

 

 

7,563,462

 

 

 

 

4,702,128

 

Balance at the end of the year

 

 

128,040,559

 

 

 

 

135,064,296

 

 

 

 

58,132,478

 

 

 

 

50,252,566