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Note 4 - Equity - Carrying and Fair Value of Derivative (Details) - Fair Value, Recurring [Member]	Sep. 30, 2025 USD ($)
Reported Value Measurement [Member]
Totals liabilities measured and recorded at fair value	$ 243,000
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Totals liabilities measured and recorded at fair value	0
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Totals liabilities measured and recorded at fair value	0
Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Totals liabilities measured and recorded at fair value	243,000
ELOC Derivative [Member] \| Reported Value Measurement [Member]
Derivative liability	243,000
ELOC Derivative [Member] \| Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 1 [Member]
Derivative liability	0
ELOC Derivative [Member] \| Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 2 [Member]
Derivative liability	0
ELOC Derivative [Member] \| Estimate of Fair Value Measurement [Member] \| Fair Value, Inputs, Level 3 [Member]
Derivative liability	$ 243,000