Quarterly report pursuant to Section 13 or 15(d)

Note 2 - Liquidity (Details Textual)

v3.19.3
Note 2 - Liquidity (Details Textual) - USD ($)
1 Months Ended 9 Months Ended
Jun. 18, 2019
Dec. 31, 2017
Nov. 30, 2017
Sep. 30, 2019
Sep. 30, 2018
Proceeds from Issuance of Common Stock       $ 6,046,915 $ 3,000,200
Underwritten Public Offering [Member]          
Stock Issued During Period, Shares, New Issues 8,000,000        
Shares Issued, Price Per Share $ 0.75        
Proceeds from Issuance of Common Stock $ 5,555,000        
Underwritten Public Offering [Member] | John K. Scott, Jr. [Member]          
Stock Issued During Period, Shares, New Issues 4,000,000        
Shares Issued, Price Per Share $ 0.75        
Underwritten Public Offering [Member] | Underwriter [Member]          
Stock Issued During Period, Shares, New Issues 4,000,000        
Shares Issued, Price Per Share $ 0.69375        
CRG Loan Agreement, Texas Case [Member] | Judicial Ruling [Member]          
Loss Contingency, Damages Awarded, Value, Amount not Taken into Consideration   $ 4,100,000   $ 4,100,000  
Platinum-Montaur Life Sciences LLC Litigation [Member]          
Loss Contingency, Damages Sought, Value     $ 1,900,000