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Consolidated Balance Sheets (Parenthetical) - $ / shares
Sep. 30, 2025
Dec. 31, 2024
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) 4,901,871 4,913,621
Common stock, shares outstanding (in shares) 4,901,871 4,913,621
Common stock, shares issued to rabbi trust (in shares) 222,506 222,887
Treasury stock shares (in shares) 2,013,240 1,961,772