Consolidated Balance Sheets (Currrent Period Unaudited) (Parentheticals) - $ / shares	Sep. 30, 2022	Dec. 31, 2021
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	7,500,000	7,500,000
Common stock, shares issued (in shares)	3,804,683	3,805,533
Common stock, shares outstanding (in shares)	3,371,362	3,373,095
Treasury stock, shares (in shares)	433,321	432,438