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Note 12 - Stockholders' Equity - The Key Assumptions Used to Value the Warrants (Details)	Sep. 30, 2023	Apr. 27, 2023	Apr. 26, 2023	Nov. 10, 2022	Sep. 09, 2022	Sep. 08, 2022
Measurement Input, Price Volatility [Member] | The November 2021 Warrants [Member]
Warrants assumptions	0.801	0.801		0.795	0.796	0.796
Measurement Input, Price Volatility [Member] | Amended July 2020 Warrants [Member]
Warrants assumptions	0.801	0.801		0.795	0.796	0.796
Measurement Input, Price Volatility [Member] | September 2022 Warrants [Member]
Warrants assumptions	0.801		0.801	0.795	0.796
Measurement Input, Price Volatility [Member] | Series A-1 Warrants [Member]
Warrants assumptions	0.801	0.801
Measurement Input, Price Volatility [Member] | Series A-2 Warrants [Member]
Warrants assumptions	0.801	0.801
Measurement Input, Share Price [Member] | The November 2021 Warrants [Member]
Warrants assumptions	0.72	0.72		1.4	4.55	3.15
Measurement Input, Share Price [Member] | Amended July 2020 Warrants [Member]
Warrants assumptions	0.72	0.72		1.05	3.5	0.7
Measurement Input, Share Price [Member] | September 2022 Warrants [Member]
Warrants assumptions	0.72		0.72	1.4	4.55
Measurement Input, Share Price [Member] | Series A-1 Warrants [Member]
Warrants assumptions	0.72	0.72
Measurement Input, Share Price [Member] | Series A-2 Warrants [Member]
Warrants assumptions	0.72	0.72
Measurement Input, Expected Term [Member] | The November 2021 Warrants [Member]
Warrants assumptions	5.4	5.4		5.8	6	5.4
Measurement Input, Expected Term [Member] | Amended July 2020 Warrants [Member]
Warrants assumptions	2.7	2.7		3.2	3.4	3.4
Measurement Input, Expected Term [Member] | September 2022 Warrants [Member]
Warrants assumptions	5.4		5.4	5.8	6
Measurement Input, Expected Term [Member] | Series A-1 Warrants [Member]
Warrants assumptions	5.6	5.6
Measurement Input, Expected Term [Member] | Series A-2 Warrants [Member]
Warrants assumptions	1.1	1.1
Measurement Input, Risk Free Interest Rate [Member] | The November 2021 Warrants [Member]
Warrants assumptions	0.0359	0.0359		0.0393	0.0343	0.0343
Measurement Input, Risk Free Interest Rate [Member] | Amended July 2020 Warrants [Member]
Warrants assumptions	0.0388	0.0388		0.0415	0.0358	0.0358
Measurement Input, Risk Free Interest Rate [Member] | September 2022 Warrants [Member]
Warrants assumptions	0.0359		0.0359	0.0393	0.0343
Measurement Input, Risk Free Interest Rate [Member] | Series A-1 Warrants [Member]
Warrants assumptions	0.0359	0.0359
Measurement Input, Risk Free Interest Rate [Member] | Series A-2 Warrants [Member]
Warrants assumptions	0.0473	0.0473
Measurement Input, Expected Dividend Rate [Member] | The November 2021 Warrants [Member]
Warrants assumptions	0	0		0	0	0
Measurement Input, Expected Dividend Rate [Member] | Amended July 2020 Warrants [Member]
Warrants assumptions	0	0		0	0	0
Measurement Input, Expected Dividend Rate [Member] | September 2022 Warrants [Member]
Warrants assumptions	0		0	0	0
Measurement Input, Expected Dividend Rate [Member] | Series A-1 Warrants [Member]
Warrants assumptions	0	0
Measurement Input, Expected Dividend Rate [Member] | Series A-2 Warrants [Member]
Warrants assumptions	0	0
Weighted Average Fair Value [Member] | The November 2021 Warrants [Member]
Warrants assumptions	0.39	0.2
Weighted Average Fair Value [Member] | Amended July 2020 Warrants [Member]
Warrants assumptions	0.24	0.06
Weighted Average Fair Value [Member] | September 2022 Warrants [Member]
Warrants assumptions	0.39		0.2
Weighted Average Fair Value [Member] | Series A-1 Warrants [Member]
Warrants assumptions	0.4	0.21
Weighted Average Fair Value [Member] | Series A-2 Warrants [Member]
Warrants assumptions	0.09	0

X

- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

+ Details

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