Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2025	Dec. 31, 2024
Treasury stock, shares	8,546,225	7,677,159
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	24,490,478	24,467,983
Common stock, shares outstanding	15,944,253	16,790,824