Note 12 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Proceeds from Issuance of Common Stock	$ 3,126	$ 0
At The Market [Member]
Stock Issued During Period, Shares, New Issues	951,873
Shares Issued, Price Per Share	$ 3.28
Proceeds from Issuance of Common Stock	$ 3,100
Proceeds from Issuance of Common Stock, Net	$ 3,000