Consolidated Balance Sheets (Parentheticals) - $ / shares	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)	9,016,140	9,010,119
Common stock, shares outstanding (in shares)	8,295,408	8,502,735
Treasury Stock, Common, Shares (in shares)	720,732	507,384