Quarterly report pursuant to Section 13 or 15(d)

Note 12 - Series 1 and Series 2 Convertible Notes (Details Textual)

v3.23.1
Note 12 - Series 1 and Series 2 Convertible Notes (Details Textual)
3 Months Ended 6 Months Ended
Jul. 06, 2022
USD ($)
Nov. 06, 2020
USD ($)
$ / shares
shares
Jun. 22, 2020
USD ($)
shares
Jun. 03, 2020
USD ($)
shares
Jun. 30, 2015
$ / shares
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
Mar. 31, 2023
USD ($)
Mar. 31, 2022
USD ($)
Mar. 10, 2023
Mar. 09, 2023
Sep. 30, 2022
$ / shares
shares
Jul. 07, 2022
USD ($)
Jun. 22, 2022
$ / shares
Jun. 04, 2020
USD ($)
$ / shares
Warrants and Rights Outstanding, Term           5 years   5 years              
Series 2 Notes Converted to Senior Secured Convertible Notes [Member]                              
Debt Conversion, Original Debt, Amount $ 699,781                            
Series D Warrant [Member]                              
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares         $ 50.00                    
Series D Warrants [Member]                              
Proceeds from Warrant Exercises     $ 82,000 $ 850,000                      
Class of Warrant or Right, Warrants Exercised | shares     2,273 23,636                      
Series J Warrants [Member]                              
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares                       $ 50.00   $ 50.00  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights | shares   16,875 1,705                 17,727      
Warrants and Rights Outstanding, Term                       1 year      
Private Placement [Member]                              
Issuance or Sale of Equity, Number of Units         71,954                    
Shares Issued, Price Per Share | $ / shares         $ 44.00                    
Series 1 Convertible Notes [Member]                              
Debt Instrument, Interest Rate, Stated Percentage                         10.00%   10.00%
Debt Instrument, Face Amount                             $ 550,000
Debt Instrument, Convertible, Conversion Price | $ / shares                             $ 54.00
Series 1 Convertible Notes [Member] | Maximum [Member]                              
Debt Instrument, Convertible, Conversion Price | $ / shares                             $ 64.00
Series 2 Convertible Notes [Member]                              
Debt Instrument, Face Amount   $ 1,050,000                          
Debt Instrument, Convertible, Conversion Price | $ / shares   $ 50.00                          
Convertible Debt                         $ 600,000    
Interest Payable                         $ 100,000    
Debt Conversion, Principal and Accrued Interest Conversion Multiple                   4.5 1.6        
Series 1 & 2 Convertible Notes [Member]                              
Debt Instrument, Term   3 years                          
Interest Expense, Debt           $ 25,000 $ 39,000 $ 50,000 $ 80,000