Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2024	Dec. 31, 2023
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	12,000,000	12,000,000
Common stock, shares issued (in shares)	7,440,518	7,440,518
Common stock, shares outstanding (in shares)	7,105,595	7,084,384
Treasury stock, shares (in shares)	334,923	356,134