General form of registration statement for all companies including face-amount certificate companies

Note 6 - Registered Direct Offerings (Details Textual)

v3.22.4
Note 6 - Registered Direct Offerings (Details Textual)
12 Months Ended
Feb. 17, 2021
shares
May 12, 2019
item
$ / shares
shares
Jun. 28, 2018
item
$ / shares
shares
Feb. 20, 2017
$ / shares
shares
Sep. 30, 2022
shares
Sep. 30, 2016
USD ($)
Shelf Registration Statement, Maximum Amount Authorized | $           $ 50,000,000
Stock Issued During Period, Shares, New Issues 215,625          
Class Of Series F Warrant [Member]            
Percentage of Warrants Per Unit       0.55    
Class Of Warrant Or Right Acquired Upon Exercise         34,013  
Series F Warrant [Member]            
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares       $ 150.00    
Class of Warrant or Right, Expired During Period (in shares)         27,958  
Class Of Series G Warrant [Member]            
Percentage of Warrants Per Unit     0.75      
Class Of Warrant Or Right Acquired Upon Exercise         43,077  
Class Of Series H Warrant [Member]            
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares   $ 80.00        
The 2017 SPA [Member]            
Stock Issued During Period, Shares, New Issues       50,833    
Shares Issued, Price Per Share | $ / shares       $ 120.00    
The 2018 SPA [Member]            
Stock Issued During Period, Shares, New Issues     45,350      
Shares Issued, Price Per Share | $ / shares     $ 100.00      
Number Of Accredited Investors | item     8      
Registered Direct Offering 2018 [Member] | Class Of Series G Warrant [Member]            
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     $ 140.00      
The 2019 SPA [Member]            
Stock Issued During Period, Shares, New Issues   43,077        
Shares Issued, Price Per Share | $ / shares   $ 65.00        
Number Of Accredited Investors | item   5