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 215,625     215,625      
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   $ 44.00         $ 44.00
Class of Warrant or Right, Number of Securities Called by Warrants or Rights     71,429 71,429 71,429    
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   $ 43.75         $ 43.75
Class of Warrant or Right, Number of Securities Called by Warrants or Rights   5,358         5,358
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     5,358 5,358 5,358 5,358  
Registered Direct Offering 2019 [Member]              
Number Of Accredited Investors   7          
Stock Issued During Period, Shares, New Issues   71,429          
Shares Issued, Price Per Share | $ / shares   $ 35.00          
Proceeds from Subscribed, Unissued Common Stock and Warrants | $   $ 2,500,000          
Payments of Financing Costs | $   333,000          
Payments of Stock Issuance Costs | $   $ 158,000