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Consolidated Balance Sheets (Parentheticals) - $ / shares
Dec. 31, 2024
Dec. 31, 2023
Treasury stock, shares 7,677,159 6,978,400
Nonvoting Common Stock    
Common stock, par value (in Dollars per share) $ 1 $ 1
Common stock, shares authorized 50,000 50,000
Common stock, shares issued
Common Stock    
Common stock, par value (in Dollars per share) $ 1 $ 1
Common stock, shares authorized 40,000,000 40,000,000
Common stock, shares issued 24,467,983 24,437,020
Common stock, shares outstanding 16,790,824 17,458,620