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Consolidated Balance Sheets (Parentheticals) - $ / shares
Dec. 31, 2022
Dec. 31, 2021
Treasury stock, shares 6,714,338 6,709,898
Nonvoting Common Stock    
Common stock, par value per share (in Dollars per share) $ 1 $ 1
Common stock, shares authorized 50,000 50,000
Common stock, shares issued
Common Stock    
Common stock, par value per share (in Dollars per share) $ 1 $ 1
Common stock, shares authorized 40,000,000 40,000,000
Common stock, shares issued 24,378,568 24,306,486
Common stock, shares outstanding 17,664,230 17,596,588