CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Mar. 31, 2024	Dec. 31, 2023
CONDENSED CONSOLIDATED BALANCE SHEETS
Common stock, par value (in dollars per share)	$ 0.20	$ 0.20
Common stock, shares authorized	4,000,000	4,000,000
Common stock, shares issued	2,629,052	2,629,052
Common stock, shares outstanding	2,523,741	2,514,775
Treasury stock, shares	78,559	87,525