Note 12 - Stock Warrants (Details Textual)	Sep. 30, 2023 $ / shares shares
Class of Warrant or Right, Outstanding | shares	23,348,906
Minimum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.16
Warrants and Rights Outstanding, Term	8 months 12 days
Maximum [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.94
Warrants and Rights Outstanding, Term	4 years
Weighted Average [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights	$ 0.17