CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Common stock, par value (in usd per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	33,333,333	33,333,333
Common stock, shares issued (in shares)	8,140,187	7,866,799
Common stock outstanding (in shares)	8,139,449	7,866,061
Treasury stock (in shares)	738	738