Annual report [Section 13 and 15(d), not S-K Item 405]

Note 1 - Nature of Business and Significant Accounting Policies (Details Textual)

v3.25.3
Note 1 - Nature of Business and Significant Accounting Policies (Details Textual)
 12 Months Ended
Aug. 08, 2025
Aug. 05, 2025
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
shares
Sep. 22, 2025
shares
Advertising Expense     $ 0 $ 0  
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax     0 600,000  
Assets     29,835,719 60,418,772  
Non-US [Member]          
Assets     $ 0 $ 9,200,000  
ONCO Series D Preferred Stock [Member]          
Investment Owned, Balance, Shares (in shares) | shares     3,125   3,125
ONCO Warrant [Member]          
Investment Owned, Balance, Shares (in shares) | shares     846,975   846,975
ONCO Common Stock [Member]          
Investment Owned, Balance, Shares (in shares) | shares       142,749  
Investment Owned, Balance, Principal Amount       $ 700,000  
ONCO Series D Preferred Stock and ONCO Warrant [Member]          
Investment Owned, Fair Value     $ 2,500,000    
Reverse Stock Split [Member]          
Stockholders' Equity Note, Stock Split, Conversion Ratio 10 10