Exercise price per share or per unit of warrants or rights outstanding.

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Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

+ References

No definition available.

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The cash inflow from the additional capital contribution to the entity.

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Number of new stock issued during the period.

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Note 11 - Subsequent Events (Details Textual) - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended
Note 11 - Subsequent Events (Details Textual) - USD ($)	Nov. 03, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Proceeds from Issuance of Common Stock				$ 3,267,000	$ 4,120,000
The 2020 Unit Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)		3,766,126	388,889	13,568,524	3,820,436
Proceeds from Issuance of Common Stock		$ 632,000	$ 70,000	$ 2,364,000	$ 575,000
Subsequent Event [Member] \| Warrants Expiring Six Month After Investment Date [Member]
Warrants and Rights Outstanding, Term (Year)	6 months
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)	3,432,486
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.198
Subsequent Event [Member] \| Warrants Expiring Five Years After Investment Date [Member]
Warrants and Rights Outstanding, Term (Year)	5 years
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)	3,432,486
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 0.248
Subsequent Event [Member] \| The 2020 Unit Offering [Member]
Stock Issued During Period, Shares, New Issues (in shares)	3,432,486
Proceeds from Issuance of Common Stock	$ 567,000
Lincoln Park Capital Fund, LLC [Member]
Stock Issued During Period, Shares, New Issues (in shares)		2,440,958	2,917,819	4,353,919	21,444,128
Proceeds from Issuance of Common Stock		$ 485,000	$ 530,000	$ 903,000	$ 3,545,000
Lincoln Park Capital Fund, LLC [Member] \| Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues (in shares)	479,546
Proceeds from Issuance of Common Stock	$ 107,000