Note 4 - Warrants - Assumptions Used (Details)	Jun. 30, 2024	Dec. 31, 2023
Minimum [Member] | Measurement Input, Risk Free Interest Rate [Member]
Warrants, assumptions	0.043	0.038
Minimum [Member] | Measurement Input, Price Volatility [Member]
Warrants, assumptions	0.879	0.795
Minimum [Member] | Measurement Input, Expected Term [Member]
Warrants, assumptions	0.6	0.3
Maximum [Member] | Measurement Input, Risk Free Interest Rate [Member]
Warrants, assumptions	0.052	0.054
Maximum [Member] | Measurement Input, Price Volatility [Member]
Warrants, assumptions	0.949	1.087
Maximum [Member] | Measurement Input, Expected Term [Member]
Warrants, assumptions	4.5	5