Note 4 - Related Party Transactions - Fair Value Inputs (Details)	Jul. 01, 2023	Mar. 31, 2023	Jan. 01, 2023
Measurement Input, Conversion Price Before [Member]
Conversion price before	2.65	2.87	6.30
Measurement Input, Conversion Price [Member]
Conversion price before	1.07	2.65	2.87
Measurement Input, Expected Term [Member]
Conversion price before	0.42	0.78	0.09
Measurement Input, Price Volatility [Member]
Conversion price before	1.568	1.689	1.67
Measurement Input, Expected Dividend Rate [Member]
Conversion price before	0	0	0
Measurement Input, Risk Free Interest Rate [Member]
Conversion price before	0.0422	0.0420	0.0446