Note 17 - Subsequent Events (Details Textual) - USD ($)	Dec. 18, 2025	Dec. 15, 2025	Nov. 28, 2025	Sep. 30, 2025	Sep. 30, 2024	Oct. 31, 2019
Preferred Stock, Shares Authorized (in shares)				50,000,000	50,000,000	50,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)				$ 0.001	$ 0.001
Subsequent Event [Member] | Series C Preferred Stock [Member]
Preferred Stock, Shares Authorized (in shares)	1,000,000
Preferred Stock, Par or Stated Value Per Share (in dollars per share)	$ 0.001
Preferred Stock, Convertible, Conversion Price (in dollars per share)	$ 2.25
Preferred Stock, Conversion, Maximum Percentage of Beneficial Ownership	4.99%
Subsequent Event [Member] | ELOC Agreement [Member]
Equity Offering, Maximum Offering Amount		$ 10,000,000
Equity Offering, Maximum Percentage of Beneficial Ownership		19.99%
Stock Issued During Period, Shares, New Issues (in shares)		40,000
Equity Offering, Percentage of Total Available Amount		0.50%
Equity Offering, Covenant, Minimum Share Price (in dollars per share)		$ 0.5
Equity Offering, Covenant, Maximum Single Day Trading Volume		$ 500,000
Equity Offering, Covenant, Previous Day Lowest Sale, Percentage		95.00%
Subsequent Event [Member] | Series C Purchase Agreements [Member] | Series C Preferred Stock [Member]
Stock Issued During Period, Shares, New Issues (in shares)	1,000,000
Proceeds from Issuance or Sale of Equity	$ 2,250,000
Proceeds From Issuance of Equity, Net	$ 2,100,000
Subsequent Event [Member] | The 2025 Plan [Member]
Common Stock, Capital Shares Reserved for Future Issuance (in shares)			891,316
Share-based Compensation Arrangement by Share-based Payment Award, Percent Increase of Shares Authorized			2.00%
Share-based Compensation Arrangement by Share-based Payment Award, Maximum Percent of Common Stock			10.00%
Subsequent Event [Member] | The 2025 Plan [Member] | Maximum [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares)			300,000
Chief Executive Officer [Member] | Subsequent Event [Member]
Salary and Wage, Officer, Excluding Cost of Good and Service Sold			$ 340,000
Chief Executive Officer [Member] | Subsequent Event [Member] | The 2025 Plan [Member] | Restricted Stock [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)			445,000