Consolidated Balance Sheets (Unaudited) (Parentheticals) - $ / shares	Sep. 30, 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, $0.01 par value: Authorized shares - 20,000,000; Issued shares – 9,026,940 and 9,016,140 at September 30, 2024 and December 31, 2023, respectively; (in shares)	9,026,940	9,016,140
Common stock, shares outstanding (in shares)	7,901,148	8,295,408
Treasury Stock, Common, Shares (in shares)	1,125,792	720,732