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Note 20 - Subsequent Events (Details Textual) - USD ($)		12 Months Ended
	Oct. 04, 2023	Sep. 30, 2023	Sep. 30, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period		84,765	145,235
Underwritten Public Offering, Common Stock	5,750,000
Price Per Share, Underwritten Agreement	$ 2
Gross Proceeds From Underwritten Public Offering, Common Stock	$ 11,500
Subsequent Event [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period	986,486

X

- Definition

Amount of gross proceeds including cash proceeds and increase amounts receivable from underwritten public offering.

+ References

No definition available.

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X

- Definition

Per share price or per unit amount of equity securities issued under the underwritten public offering.

+ References

No definition available.

+ Details

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X

- Definition

The number of shares to be offered in the initial pubic offering under the underwritten public offering

+ References

No definition available.

+ Details

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X

- Definition

Number of share options (or share units) exercised during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-SubTopic 10
-Topic 505
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481112/505-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(1)(iv)(02)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480429/718-10-50-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
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-Name Accounting Standards Codification
-Section S99
-Paragraph 1
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-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-1

Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1

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