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Note 10 - Notes Payable (Details Textual)								3 Months Ended	6 Months Ended
Note 10 - Notes Payable (Details Textual)	Aug. 10, 2026 shares	Jul. 28, 2026 USD ($) shares	Apr. 30, 2026	Oct. 27, 2025 USD ($) shares	Sep. 30, 2025 USD ($)	Oct. 01, 2024 USD ($)	Jun. 24, 2024 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jul. 01, 2026 USD ($)
Proceeds from Debt, Net of Issuance Costs									$ 0	$ 0
Reverse Stock Split [Member]
Stockholders' Equity Note, Stock Split, Conversion Ratio			10
Conversion of Partitioned Notes to Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares) \| shares				42,903
Conversion of Partitioned Notes to Common Stock [Member] \| Subsequent Event [Member]
Debt Conversion, Converted Instrument, Shares Issued (in shares) \| shares	37,792	43,308
Warrant Inducement Agreement [Member]
Proceeds from Issuance of Warrants								$ 1,900,000
The 2024 Note [Member] \| Senior Secured Promissory Note [Member]
Debt Instrument, Face Amount					$ 1,459,000		$ 2,360,000
Debt Instrument, Unamortized Discount							350,000
Payments of Financing Costs							10,000
Proceeds from Debt, Net of Issuance Costs							$ 2,000,000
Debt Instrument, Interest Rate, Stated Percentage							9.00%
Debt Instrument, Exit Fee Percentage							7.00%
Debt Instrument, Mandatory Prepayment, Percentage							40.00%
Debt Instrument, Percentage of Proceeds Repaid						40.00%
Repayments of Debt						$ 762,600
Long-Term Debt, Gross					338,400
Debt Instrument, Increase (Decrease), Net				$ (327,991)
The 2024 Note [Member] \| Senior Secured Promissory Note [Member] \| Maximum [Member]
Debt Instrument, Redemption Amount							$ 270,000
Promissory Note 1 [Member]
Debt Instrument, Face Amount				261,841
Promissory Note 2 [Member]
Debt Instrument, Face Amount				66,150
The 2025 Note [Member] \| Senior Secured Promissory Note [Member]
Debt Instrument, Face Amount					1,130,000
Debt Instrument, Unamortized Discount					125,000
Payments of Financing Costs					5,000
Proceeds from Debt, Net of Issuance Costs					$ 1,000,000
Debt Instrument, Interest Rate, Stated Percentage					9.00%
Debt Instrument, Exit Fee Percentage					7.00%
Debt Instrument, Redemption Amount					$ 0
Debt Instrument, Mandatory Prepayment, Percentage					40.00%
Repayments of Debt				$ 455,000
Debt Instrument, Reduction in Outstanding Balance at The End Of Each Month					$ 135,000
Debt Instrument, Increase (Decrease), Percentage					1.00%
Long-Term Debt									$ 699,769
The 2025 Note [Member] \| Senior Secured Promissory Note [Member] \| Subsequent Event [Member]
Debt Instrument, Increase (Decrease), Net		$ (200,000)
Long-Term Debt											$ 349,769
The 2025 Note [Member] \| Senior Secured Promissory Note [Member] \| Maximum [Member]
Debt Instrument, Redemption Amount					$ 135,000