Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares	Mar. 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, issued (in shares)	9,010,119	9,010,119
Common stock, issued (in shares)	9,010,119	9,010,119
Common stock, shares outstanding (in shares)	8,502,735	8,502,735
Treasury Stock, Common, Shares (in shares)	507,384	507,384