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

Note 9 - October 2019 Registered Direct Offering (Details Textual)

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Note 9 - October 2019 Registered Direct Offering (Details Textual)
 3 Months Ended 6 Months Ended 9 Months Ended
Feb. 17, 2021
shares
Oct. 16, 2019
USD ($)
$ / shares
shares
Jun. 30, 2023
shares
Jun. 30, 2023
shares
Jun. 30, 2023
shares
Sep. 30, 2022
shares
Oct. 18, 2019
$ / shares
shares
Stock Issued During Period, Shares, New Issues 26,954     26,954      
Warrants and Rights Outstanding, Term     5 years 5 years 5 years    
Series I Warrant [Member]              
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares   $ 352.00         $ 352.00
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     8,929 8,929 8,929    
Proceeds from Subscribed, Unissued Common Stock and Warrants | $   $ 2,500,000          
Payments of Stock Issuance Costs | $   $ 158,000          
Series I Warrant [Member] | Minimum [Member]              
Percentage of Fee on Gross Proceeds of Warrants   0.060          
Series I Warrant [Member] | Maximum [Member]              
Percentage of Fee on Gross Proceeds of Warrants   0.082          
October 2019 Placement Agent Warrants [Member]              
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares   $ 350.00         $ 350.00
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   670         670
Warrants and Rights Outstanding, Term             5 years
Series I and Placement Agent Warrants [Member]              
Class of Warrant or Right, Exercised     0   0    
Placement Agent Warrants [Member]              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     670 670 670 670  
Registered Direct Offering 2019 [Member]              
Number Of Accredited Investors   7          
Stock Issued During Period, Shares, New Issues   8,929          
Shares Issued, Price Per Share | $ / shares   $ 280.00          
Proceeds from Subscribed, Unissued Common Stock and Warrants | $   $ 2,500,000          
Payments of Financing Costs | $   333,000          
Payments of Stock Issuance Costs | $   $ 158,000