Note 3 - Equity - Schedule of Warrants (Details)	3 Months Ended
	Dec. 31, 2022 $ / shares shares
Class of Warrant or Right, Exercisable, Weighted Average Exercise Price (in dollars per share) (in dollars per share) | $ / shares	$ 4.13
Class of Warrant or Right, Outstanding (in shares) (in shares) | shares	1,108,805
Class of Warrant or Right, Weighted Average Remaining Contractual Term (Year) (Year)	1 month 6 days
Class of Warrant or Right, Outstanding, Weighted Average Exercise Price (in dollars per share) (in dollars per share) | $ / shares	$ 4.13
Class of Warrant or Right, Warrants, Exercisable, Number (in shares) (in shares) | shares	1,108,805
Exercise Price, Four Dollars, Minimum [Member]
Class of Warrant or Right, Exercisable, Weighted Average Exercise Price (in dollars per share) (in dollars per share) | $ / shares	$ 4.00
Class of Warrant or Right, Outstanding (in shares) (in shares) | shares	1,085,068
Class of Warrant or Right, Weighted Average Remaining Contractual Term (Year) (Year)	1 month 6 days
Class of Warrant or Right, Outstanding, Weighted Average Exercise Price (in dollars per share) (in dollars per share) | $ / shares	$ 4.00
Class of Warrant or Right, Warrants, Exercisable, Number (in shares) (in shares) | shares	1,085,068
Exercise Price, Ten Dollars, Maximum [Member]
Class of Warrant or Right, Exercisable, Weighted Average Exercise Price (in dollars per share) (in dollars per share) | $ / shares	$ 10.00
Class of Warrant or Right, Outstanding (in shares) (in shares) | shares	23,737
Class of Warrant or Right, Weighted Average Remaining Contractual Term (Year) (Year)	25 days
Class of Warrant or Right, Outstanding, Weighted Average Exercise Price (in dollars per share) (in dollars per share) | $ / shares	$ 10.00
Class of Warrant or Right, Warrants, Exercisable, Number (in shares) (in shares) | shares	23,737