Note 6 - Convertible Promissory Note - Fair Value Inputs (Details)	Jun. 30, 2023	Mar. 31, 2023	Jan. 01, 2023
Measurement Input, Conversion Price Before [Member]
Conversion price before		2.87	6.30
Measurement Input, Conversion Price [Member]
Conversion price before		2.65	2.87
Measurement Input, Expected Term [Member]
Conversion price before		0.78	0.09
Measurement Input, Price Volatility [Member]
Conversion price before		1.689	1.67
Measurement Input, Expected Dividend Rate [Member]
Conversion price before		0	0
Measurement Input, Risk Free Interest Rate [Member]
Conversion price before		0.0420	0.0446
Convertible Debt [Member] | Measurement Input, Conversion Price Before [Member]
Conversion price before	2.87
Convertible Debt [Member] | Measurement Input, Conversion Price [Member]
Conversion price before	2.65
Convertible Debt [Member] | Measurement Input, Expected Term [Member]
Conversion price before	0.36
Convertible Debt [Member] | Measurement Input, Price Volatility [Member]
Conversion price before	1.82
Convertible Debt [Member] | Measurement Input, Expected Dividend Rate [Member]
Conversion price before	0
Convertible Debt [Member] | Measurement Input, Risk Free Interest Rate [Member]
Conversion price before	0.0420