Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares	Sep. 30, 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, issued (in shares)	9,016,140	9,010,119
Common stock, shares outstanding (in shares)	8,440,356	8,502,735
Treasury Stock, Common, Shares (in shares)	575,784	507,384