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Common Stock (Tables)
12 Months Ended
Dec. 31, 2021
Equity [Abstract]  
Schedule of number of common stock shares

Changes in the number of common stock shares outstanding were as follows:

Year Ended December 31,

2021

2020

2019

Shares outstanding, beginning

21,318,638

22,119,380

22,192,894

Treasury shares repurchased through stock repurchase authorization

(225,205

)

(856,499

)

(116,034

)

Issuance of treasury shares for vesting of stock awards

102,060

31,442

18,205

Issuance of shares related to employee stock ownership plan

24,315

24,315

24,315

Shares outstanding, ending

21,219,808

21,318,638

22,119,380