Note 8 - Warrants - Valuation Techniques (Details)	Dec. 31, 2022
Measurement Input, Exercise Price [Member]
Warrants and Rights Outstanding, Measurement Input	0.01
Measurement Input, Price Volatility [Member]
Warrants and Rights Outstanding, Measurement Input	52.5
Measurement Input, Expected Term [Member]
Warrants and Rights Outstanding, Measurement Input	0.0
Measurement Input, Risk Free Interest Rate [Member]
Warrants and Rights Outstanding, Measurement Input	3.9
Measurement Input, Expected Dividend Rate [Member]
Warrants and Rights Outstanding, Measurement Input	0