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Note 8 - Warrants - Fair Value Assumptions (Details)	Sep. 30, 2023 $ / shares yr	Sep. 30, 2022 $ / shares yr
Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input	0	0
Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input	0.038	0.0175
Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input	1.176	1.5141
Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input | yr	4.63	3.52
Measurement Input, Exercise Price [Member]
Warrants and Rights Outstanding, Measurement Input	1.18	10.47
Measurement Input, Share Price [Member]
Warrants and Rights Outstanding, Measurement Input | $ / shares	4.11	11.29
Fair Value per Warrant on Grant Date [Member]
Warrants and Rights Outstanding, Measurement Input	3.97	9.68

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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