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Consolidated Balance Sheets (Parenthetical) - $ / shares
Dec. 31, 2024
Dec. 31, 2023
Statement of Financial Position [Abstract]    
Common stock, par value (in dollars per share) $ 2 $ 2
Common stock, shares authorized (in shares) 15,000,000 15,000,000
Common stock, shares issued (in shares) 4,913,621 4,908,413
Common stock, shares outstanding (in shares) 4,913,621 4,908,413
Common stock, shares issued to rabbi trust (in shares) 222,887 243,118
Treasury shares (in shares) 1,961,772 1,894,419