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Note 2 - Notes Receivable (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Oct. 10, 2025
Oct. 07, 2025
Jul. 01, 2025
Jul. 03, 2024
Jun. 19, 2024
Jul. 19, 2023
Oct. 13, 2022
Sep. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Apr. 30, 2027
Apr. 04, 2024
Mar. 31, 2024
Dec. 31, 2023
Oct. 31, 2022
Investment Income, Interest               $ 9,723 $ 17,221 $ 24,435 $ 159,003          
Warrant [Member]                                
Investment, Expiration Term (Year)             5 years                  
Investment, Purchase Price, Percentage of Original Principal                               50.00%
Securities Purchase Agreement [Member]                                
Financing Receivable, after Allowance for Credit Loss, Total             $ 1,875,000                  
Note Receivable, Purchase Discount           25.00% 20.00%               20.00%  
Financing Receivable, Unamortized Purchase Premium (Discount)             $ 375,000               $ 375,000  
Financing Receivable, Term (Month)             9 months                  
Financing Receivable, Interest Rate, Stated Percentage         2500.00% 20.00% 20.00%                  
Investment Income, Amortization of Discount           $ 578,425 $ 270,833       1,048,402          
Financing Receivable, Accrued Interest, after Allowance for Credit Loss                             $ 203,425  
Note Receivable, Potential Investment Amount             2,000,000                  
Note Receivable, Over Allotment Option             $ 500,000                  
Financing Receivable, before Allowance for Credit Loss         $ 5,967,100 $ 500,000               $ 50,000    
Debt Instrument, Debt Default, Amount         4,193,607                      
Investment Income, Right to Record Additional Interest         1,923,840                      
Debt Instrument, Debt Default, Penalty Amount         $ 838,721                      
Investment Income, Amount Deferred                   1,923,840            
Investment Income, Interest                     141,780          
5 String Solutions LLC [Member]                                
Financing Receivable, Interest Rate, Stated Percentage                         12.00%      
Financing Receivable, before Allowance for Credit Loss               400,000   400,000     $ 50,000      
Investments       $ 198,500                        
Receivable with Imputed Interest, Effective Yield (Interest Rate)     12.00% 12.00%                        
Interest Receivable       $ 1,500                        
Notes Receivable, Interest Receivable and Investment       $ 250,000       325,000 $ 13,418 325,000 $ 13,418          
Proceeds from Collection of Loans Receivable     $ 75,000                          
Accrued Investment Income Receivable               $ 24,435   $ 24,435            
5 String Solutions LLC [Member] | Subsequent Event [Member]                                
Proceeds from Collection of Loans Receivable $ 75,000 $ 75,000                            
5 String Solutions LLC [Member] | Forecast [Member]                                
Notes Receivable, Converted Ownership Percentage                       55.00%        
Remaining Notes Receivable, Converted Ownership, Percentage                       45.00%