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Note 5 - Warrant Liability - Valuation Techniques (Details) - Espen Garder Haug and Black-Scholes Merton Models [Member]	Sep. 30, 2023	Jul. 31, 2023	Apr. 30, 2023
April 2023 Warrants [Member] \| Measurement Input, Exercise Price [Member]
Derivative Liability, Measurement Input			600
April 2023 Warrants [Member] \| Measurement Input, Share Price [Member]
Derivative Liability, Measurement Input			1.58
April 2023 Warrants [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Derivative Liability, Measurement Input			0.0368
April 2023 Warrants [Member] \| Measurement Input, Expected Term [Member]
Derivative Liability, Measurement Input			2.5
April 2023 Warrants [Member] \| Measurement Input, Price Volatility [Member]
Derivative Liability, Measurement Input			1.24
July 2023 Warrants [Member] \| Measurement Input, Exercise Price [Member]
Derivative Liability, Measurement Input		600
July 2023 Warrants [Member] \| Measurement Input, Share Price [Member]
Derivative Liability, Measurement Input		1.58
July 2023 Warrants [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Derivative Liability, Measurement Input		0.0368
July 2023 Warrants [Member] \| Measurement Input, Expected Term [Member]
Derivative Liability, Measurement Input		2.8
July 2023 Warrants [Member] \| Measurement Input, Price Volatility [Member]
Derivative Liability, Measurement Input		1.24
September 2023 Inducement Warrants [Member] \| Measurement Input, Exercise Price [Member]
Derivative Liability, Measurement Input	600
September 2023 Inducement Warrants [Member] \| Measurement Input, Share Price [Member]
Derivative Liability, Measurement Input	1.58
September 2023 Inducement Warrants [Member] \| Measurement Input, Risk Free Interest Rate [Member]
Derivative Liability, Measurement Input	0.0368
September 2023 Inducement Warrants [Member] \| Measurement Input, Expected Term [Member]
Derivative Liability, Measurement Input	3.4
September 2023 Inducement Warrants [Member] \| Measurement Input, Price Volatility [Member]
Derivative Liability, Measurement Input	1.24