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

Note 14 - Sale of ENTADFI (Details Textual)

v3.25.3
Note 14 - Sale of ENTADFI (Details Textual)
 12 Months Ended
Sep. 22, 2025
USD ($)
shares
Aug. 08, 2025
Aug. 05, 2025
Nov. 26, 2024
USD ($)
Sep. 30, 2024
Sep. 24, 2024
shares
Apr. 24, 2024
USD ($)
Sep. 29, 2023
USD ($)
$ / shares
shares
Apr. 19, 2023
USD ($)
Sep. 30, 2025
USD ($)
shares
Sep. 30, 2024
USD ($)
Aug. 31, 2025
USD ($)
Sep. 19, 2024
USD ($)
Proceeds from Sale of Productive Assets                   $ 8,280,290 $ 304,536    
Noncash or Part Noncash Divestiture, Amount of Consideration Received                   2,500,000 918,372    
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal                   $ 10,780,290 1,222,908    
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 Promissory Notes [Member]                          
Proceeds from Collection of Notes Receivable $ 6,300,000                        
Financing Receivable, after Allowance for Credit Loss $ 8,800,000                        
Reverse Stock Split [Member]                          
Stockholders' Equity Note, Stock Split, Conversion Ratio   10 10                    
ONCO [Member] | ONCO Warrant [Member]                          
Investment Owned, Balance, Shares (in shares) | shares 4,362,827                        
ONCO [Member] | Preferred Shares Converted to Common Shares [Member]                          
Conversion of Stock, Shares Converted (in shares) | shares           142,749              
ONCO [Member] | Reverse Stock Split [Member]                          
Stockholders' Equity Note, Stock Split, Conversion Ratio           40              
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement [Member]                          
Disposal Group, Including Discontinued Operation, Consideration                 $ 20,000,000        
Proceeds from Sale of Productive Assets                 6,000,000        
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement [Member] | Promissory Notes Receivable, Due September 30, 2023 [Member]                          
Disposal Group, Including Discontinued Operation, Consideration                 4,000,000        
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement [Member] | Promissory Notes Receivable, Due April 19, 2024 [Member]                          
Disposal Group, Including Discontinued Operation, Consideration                 5,000,000        
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement [Member] | Promissory Notes Receivable, Due September 30, 2024 [Member]                          
Disposal Group, Including Discontinued Operation, Consideration                 5,000,000        
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement [Member] | Milestone Receivable [Member]                          
Disposal Group, Including Discontinued Operation, Consideration                 80,000,000        
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement, Amendment [Member]                          
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares               $ 1,000          
Preferred Stock, Convertible, Conversion Price (in dollars per share) | $ / shares               $ 0.5254          
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal                   $ 10,800,000 $ 1,200,000    
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement, Amendment [Member] | ONCO [Member]                          
Preferred Stock, Convertible, Shares Issuable (in shares) | shares               5,709,935          
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement, Amendment [Member] | ONCO [Member]                          
Preferred Stock, Convertible, Shares Issuable (in shares) | shares           142,749              
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement, Amendment [Member] | Preferred Stock [Member] | ONCO [Member]                          
Stock Issued During Period, Shares, Purchase of Assets (in shares) | shares               3,000          
Noncash or Part Noncash Divestiture, Amount of Consideration Received               $ 900,000          
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement, Amendment [Member] | Promissory Notes Receivable, Due September 30, 2023 [Member]                          
Proceeds from Collection of Notes Receivable               1,000,000          
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement, Amendment [Member] | Promissory Notes Receivable, Due September 30, 2023 [Member] | Note Receivable, Settlement Terms [Member]                          
Disposal Group, Including Discontinued Operation, Consideration               4,000,000          
Proceeds from Collection of Notes Receivable               $ 1,000,000          
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement, Amendment [Member] | Promissory Notes Receivable, Due April 19, 2024 [Member]                          
Proceeds from Collection of Notes Receivable             $ 50,000            
Notes Receivable, Percentage of Revenues         25.00%   15.00%            
Notes Receivable, Percentage of Net Proceeds       25.00% 20.00%   10.00%            
Notes Receivable, Covenant, Minimum Net Capital Raised       $ 97,000                  
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | Asset Purchase Agreement, Amendment [Member] | Promissory Notes Receivable, Due September 30, 2024 [Member]                          
Debt Instrument, Interest Rate, Stated Percentage                         10.00%
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | BWV Asset Purchase Agreement [Member] | Promissory Notes Receivable, Due September 30, 2024 [Member]                          
Disposal Group, Including Discontinued Operation, Consideration                 $ 5,000,000       $ 3,500,000
Debt Instrument, Face Amount       $ 5,200,000                  
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | BWV Asset Purchase Agreement, Amended [Member] | Promissory Notes Receivable, Due September 30, 2024 [Member]                          
Debt Instrument, Face Amount                       $ 5,000,000  
ENTADFI [Member] | Disposal Group, Disposed of by Sale, Not Discontinued Operations [Member] | BWV Asset Purchase Agreement, Amended [Member] | Promissory Notes Receivable, Due September 30, 2024 [Member] | Additional Loan to ONCO [Member]                          
Debt Instrument, Face Amount                       $ 200,000