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CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - $ / shares
Jun. 30, 2023
Dec. 31, 2022
Statement of Financial Position [Abstract]    
Capital stock, par value (in dollars per share) $ 2.00 $ 2.00
Capital stock, shares authorized (in shares) 20,000,000 20,000,000
Capital stock, shares issued (in shares) 16,384,353 16,384,353
Capital stock, shares outstanding (in shares) 15,124,451 15,001,329
Treasury stock (in shares) 1,284,195 1,345,700