Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Warrants - Assumptions Used (Details)

v3.20.2
Note 4 - Warrants - Assumptions Used (Details) - Liability Classified Warrants [Member]
Sep. 30, 2020
Dec. 31, 2019
Measurement Input, Expected Dividend Rate [Member]    
Warrants, assumptions 0 0
Minimum [Member] | Measurement Input, Risk Free Interest Rate [Member]    
Warrants, assumptions 0.001 0.016
Minimum [Member] | Measurement Input, Price Volatility [Member]    
Warrants, assumptions 1.125 0.975
Minimum [Member] | Measurement Input, Expected Term [Member]    
Warrants, assumptions 1.4 2.1
Maximum [Member] | Measurement Input, Risk Free Interest Rate [Member]    
Warrants, assumptions 0.003 0.017
Maximum [Member] | Measurement Input, Price Volatility [Member]    
Warrants, assumptions 1.241 1.075
Maximum [Member] | Measurement Input, Expected Term [Member]    
Warrants, assumptions 4.9 4.3