Note 5 - Warrants - Assumptions Used (Details)	Dec. 31, 2024	Dec. 31, 2023
Minimum [Member] | Measurement Input, Risk Free Interest Rate [Member]
Warrants, assumptions	0.042	0.038
Minimum [Member] | Measurement Input, Price Volatility [Member]
Warrants, assumptions	0.769	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	0.044	0.054
Maximum [Member] | Measurement Input, Price Volatility [Member]
Warrants, assumptions	0.994	1.087
Maximum [Member] | Measurement Input, Expected Term [Member]
Warrants, assumptions	4.8	5