Annual report pursuant to Section 13 and 15(d)

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Note 9 - 2021 Registered Direct Offering (Details Textual)

v3.22.4

Note 9 - 2021 Registered Direct Offering (Details Textual) - USD ($)	Feb. 17, 2021	Feb. 11, 2021	Sep. 30, 2022
Stock Issued During Period, Shares, New Issues	43,125,004
Series K Warrant [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		32,343,754	32,343,754
Warrants and Rights Outstanding, Term		5 years 6 months
Placement Agent 2 Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights		3,234,375	3,234,375
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 0.20
Warrants and Rights, Percent of Stock Oustanding Callable		7.50%
The 2021 Registered Direct Offering [Member]
Stock Issued During Period, Shares, New Issues		43,125,004
Shares Issued, Price Per Share		$ 0.16
Class of Warrant or Right, Exercise Price of Warrants or Rights		$ 0.17
Proceeds from Issuance or Sale of Equity, Total		$ 6,900,000
Payments of Stock Issuance Costs		700,000
The 2021 Registered Direct Offering [Member] \| Non-accountable Expense Fee [Member]
Securities Purchase Agreement, Potential Fees		10,000
The 2021 Registered Direct Offering [Member] \| Fees and Expenses of Legal Counsel and Other Out-of-pocket Expenses [Member]
Securities Purchase Agreement, Potential Fees		50,000
The 2021 Registered Direct Offering [Member] \| Clearing Expenses [Member]
Securities Purchase Agreement, Potential Fees		$ 10,000
The 2021 Registered Direct Offering [Member] \| Participating Investors [Member]
Securities Purchase Agreement, Cash Placement Fee		7.50%
The 2021 Registered Direct Offering [Member] \| Certain Investors With Pre-existing Relationships [Member]
Securities Purchase Agreement, Cash Placement Fee		6.00%

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