Consolidated Balance Sheets (Parentheticals) - $ / shares	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Common stock, par value (in dollars per share)		$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	20,000,000	20,000,000
Common stock, shares issued (in shares)	9,026,940	9,016,140
Common stock, shares outstanding (in shares)	7,786,679	8,295,408
Treasury Stock, Common, Shares (in shares)	1,240,261	720,732