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CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares
 3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Statement of Stockholders' Equity [Abstract]        
Cash dividends declared (in dollars per share) $ 0.31 $ 0.31 $ 0.93 $ 0.88
Distribution Of Shares Of Treasury Stock For Directors Compensation Shares     8,575 9,291
Distribution of shares of treasury stock for employee stock compensation (in shares)       3,860
Treasury stock acquired (in shares)   97 15,388 28,803
Sale of shares of treasury stock (in shares) 2,540 1,887 7,222 7,911
Shares forfeited (in shares) 48   729  
Distribution of shares of treasury stock for deferred directors' compensation (in shares)       2,707
Distribution of shares of treasury stock for employee restricted stock awards (in shares)     3,985