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Note 14 - Stockholders' Equity - The Key Assumptions Used to Value the Warrants (Details) | Sep. 30, 2022 | Sep. 09, 2022 | Sep. 08, 2022
--- | --- | --- | ---
Measurement Input, Price Volatility [Member] | The November 2021 Warrants [Member] |  |  |
Warrants assumptions | 0.796 | 0.796 | 0.796
Measurement Input, Price Volatility [Member] | Amended July 2020 Warrants [Member] |  |  |
Warrants assumptions | 0.796 | 0.796 | 0.796
Measurement Input, Expected Term [Member] | The November 2021 Warrants [Member] |  |  |
Warrants assumptions | 6.0 | 6.0 | 5.4
Measurement Input, Expected Term [Member] | Amended July 2020 Warrants [Member] |  |  |
Warrants assumptions | 3.3 | 3.4 | 3.4
Measurement Input, Risk Free Interest Rate [Member] | The November 2021 Warrants [Member] |  |  |
Warrants assumptions | 0.0343 | 0.0343 | 0.0343
Measurement Input, Risk Free Interest Rate [Member] | Amended July 2020 Warrants [Member] |  |  |
Warrants assumptions | 0.0358 | 0.0358 | 0.0358
Measurement Input, Expected Dividend Rate [Member] | The November 2021 Warrants [Member] |  |  |
Warrants assumptions | 0.0000 | 0.0000 | 0.0000
Measurement Input, Expected Dividend Rate [Member] | Amended July 2020 Warrants [Member] |  |  |
Warrants assumptions | 0.0000 | 0.0000 | 0.0000
Measurement Input, Share Price [Member] | The November 2021 Warrants [Member] |  |  |
Warrants assumptions | 0.07 | 0.13 | 0.09
Measurement Input, Share Price [Member] | Amended July 2020 Warrants [Member] |  |  |
Warrants assumptions | 0.05 | 0.10 | 0.02

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- 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 -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258 + Details
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