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Consolidated Balance Sheets (Parenthetical) - $ / shares
Jun. 30, 2023
Dec. 31, 2022
Consolidated Balance Sheets [Abstract]    
Common Stock, Par Value Per Share $ 1 $ 1
Common Stock, Shares Authorized 15,000,000 15,000,000
Common Stock, Shares, Issued 4,710,972 4,710,972
Common Stock, Shares, Outstanding 4,349,988 4,390,397
Capital Stock, No Par Value
Capital Stock, Shares Authorized 5,000,000 5,000,000
Capital Stock, Shares, Issued 0 0
Capital Stock, Shares, Outstanding 0 0
Treasury Stock, Shares 360,984 320,575