Quarterly report pursuant to Section 13 or 15(d)

Note 3 - Warrant Derivative Liability (Details Textual)

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Note 3 - Warrant Derivative Liability (Details Textual)
$ / shares in Units, Pure in Thousands
3 Months Ended 6 Months Ended
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
shares
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Sep. 30, 2023
May 12, 2019
$ / shares
Jun. 28, 2018
$ / shares
Derivative Liability, Number of Instruments Held 0   0   0    
Gain (Loss) on Sale of Derivatives | $ $ 0 $ 1,158,197 $ 0 $ 1,158,197      
Series G Warrant [Member]              
Class of Warrants and Rights, Required Cash Purchase Price | $ / shares             $ 22
Series H Warrant [Member]              
Class of Warrants and Rights, Required Cash Purchase Price | $ / shares           $ 10.66  
Series G and Series H Warrants [Member]              
Stock Issued During Period, Shares, Warrants Exercised | shares   12,019          
Stockholders' Equity, Period Increase (Decrease) | $   $ 49,278