Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Stockholders' Equity - Assumption Used to Value Liability Classified Warrants at Grant Date (Details)

v3.19.1
Note 8 - Stockholders' Equity - Assumption Used to Value Liability Classified Warrants at Grant Date (Details)
Mar. 31, 2019
$ / shares
yr
Measurement Input, Expected Term [Member]  
Expected Term (Year) | yr 5
Measurement Input, Expected Term [Member] | Warrant Liabilities [Member]  
Expected Term (Year) | yr 4.9
Measurement Input, Price Volatility [Member]  
Expected Term (Year) 0.85
Measurement Input, Price Volatility [Member] | Warrant Liabilities [Member]  
Expected Term (Year) 0.85
Measurement Input, Expected Dividend Rate [Member]  
Expected Term (Year) 0
Measurement Input, Expected Dividend Rate [Member] | Warrant Liabilities [Member]  
Expected Term (Year) 0
Measurement Input, Exercise Price [Member]  
Expected Term (Year) 0.5
Measurement Input, Exercise Price [Member] | Warrant Liabilities [Member]  
Expected Term (Year) 0.5
Measurement Input, Risk Free Interest Rate [Member]  
Expected Term (Year) 0.025
Measurement Input, Risk Free Interest Rate [Member] | Warrant Liabilities [Member]  
Expected Term (Year) 0.0223
Measurement Input, Weighted Average of Shares Granted, Fair Value [Member]  
Expected Term (Year) 0.22
Measurement Input, Weighted Average of Shares Granted, Fair Value [Member] | Warrant Liabilities [Member]  
Expected Term (Year) 0.19