Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares	Mar. 31, 2024	Dec. 31, 2023
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)	9,016,140	9,016,140
Common stock, shares outstanding (in shares)	8,160,758	8,295,408
Treasury Stock, Common, Shares (in shares)	855,382	720,732