Note 11 - Subsequent Events (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		9 Months Ended
	Nov. 04, 2022	Sep. 30, 2022	Sep. 30, 2021
Proceeds from Issuance of Common Stock		$ 5	$ 0
Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues (in shares)	25,000,000
Shares Issued, Price Per Share (in dollars per share)	$ 3.21
Proceeds from Issuance of Common Stock	$ 80,300