v3.26.1
Note 5 - Capital Shares (Details Textual)
3 Months Ended 9 Months Ended
Jun. 10, 2026
USD ($)
$ / shares
shares
Feb. 12, 2025
USD ($)
$ / shares
shares
Oct. 30, 2024
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
$ / shares
shares
Jun. 30, 2026
USD ($)
$ / shares
shares
Jun. 30, 2025
USD ($)
$ / shares
shares
May 27, 2026
shares
Dec. 12, 2025
USD ($)
Sep. 30, 2025
$ / shares
Sep. 30, 2024
$ / shares
Proceeds from Issuance of Common Stock           $ 6,997,816 $ 7,497,133        
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares       $ 15.62 $ 15.35 $ 15.62 $ 15.35     $ 15.35 $ 21.74
Class of Warrant or Right, Issued During Period | shares             326,560        
Stock Issued During Period, Value, New Issues       $ 3,499,991   $ 6,997,816 $ 7,497,133        
Class of Warrant or Right, Outstanding, Weighted Average Remaining Contractual Term           26 months          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period | shares       0 0 0 0        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value       $ 168,089   $ 168,089          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted-Average Remaining Contractual Term           60 months          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted Average Exercise Price | $ / shares       $ 24.7   $ 24.7          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value Per Share | $ / shares       $ 168,089   $ 168,089          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted-Average Remaining Contractual Term           60 months          
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount       $ 0   $ 0          
Share-Based Payment Arrangement, Expense       $ 500,000 $ 200,000 $ 1,400,000 $ 300,000        
The 2019 Plan [Member]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized | shares       3,117,737   3,117,737   750,000      
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant | shares       808,967   808,967          
Share-Based Payment Arrangement, Option [Member]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Term           5 years          
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period           10 years          
Share-Based Compensation Arrangement by Share-Based Payment Award, Fair Value Assumptions, Expected Dividend Rate           0.00%          
Share-Based Payment Arrangement, Option [Member] | The 2019 Plan [Member]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period           10 years          
Restricted Stock Units (RSUs) [Member]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period           10 years          
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount       $ 5,300,000   $ 5,300,000          
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition           35 months          
Restricted Stock Units (RSUs) [Member] | Minimum [Member]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period           12 months          
Restricted Stock Units (RSUs) [Member] | Maximum [Member]                      
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period           35 months          
Chief Executive Officer, Secretary, and Director [Member] | Warrant Shares [Member]                      
Class of Warrant or Right, Exercise Price of Warrants or Rights | $ / shares     $ 3.445                
Class of Warrant or Right, Issued During Period | shares     326,560                
Warrants and Rights Outstanding, Term     5 years                
Class of Warrant or Right, Maximum Beneficial Ownership     19.99%                
Series B-1 Preferred Shares Converted into Common Shares [Member]                      
Conversion of Stock, Shares Converted | shares           98          
Conversion of Stock, Shares Issued | shares           510,415          
Private Placement [Member]                      
Stock Issued During Period, Shares, New Issues (in shares) | shares 729,241                    
Proceeds from Issuance of Common Stock $ 3,500,000                    
Shares Issued, Price Per Share (in dollars per share) | $ / shares $ 4.69                    
Private Placement [Member] | Chief Executive Officer [Member]                      
Shares Issued, Price Per Share (in dollars per share) | $ / shares $ 5.21                    
February 2025 Series B-1 Purchase Agreement [Member]                      
Proceeds from Issuance or Sale of Equity   $ 15,000,000                  
February 2025 Series B-1 Purchase Agreement [Member] | Series B-1 Preferred Stock [Member]                      
Stock Issued During Period, Shares, New Issues (in shares) | shares   834                  
Shares Issued, Price Per Share (in dollars per share) | $ / shares   $ 10,000                  
Preferred Stock, Par or Stated Value Per Share | $ / shares   $ 10,000                  
Preferred Stock, Convertible, Conversion Ratio   5,208                  
Preferred Stock, Convertible, Conversion Price | $ / shares   $ 1.92                  
February 2025 Series B-1 Purchase Agreement [Member] | Common Stock [Member]                      
Stock Issued During Period, Shares, New Issues (in shares) | shares   3,468,746                  
Shares Issued, Price Per Share (in dollars per share) | $ / shares   $ 1.92                  
Series B-1 Purchase Agreement [Member] | Series B-1 Preferred Stock [Member]                      
Preferred Stock, Convertible, Maximum Beneficial Ownership, Tier One   4.99%                  
Preferred Stock, Convertible, Maximum Beneficial Ownership, Tier Two   9.99%                  
Preferred Stock, Convertible, Maximum Beneficial Ownership, Tier Three   19.99%                  
October 2024 SPA [Member] | Chief Executive Officer, Secretary, and Director [Member]                      
Proceeds from Issuance or Sale of Equity     $ 1,540,819                
Equity Offering, Maximum Amount     $ 5,000,000                
Units Issued, Percentage of Underlying Conversion Shares     75.00%                
Units Issued, Combined Purchase Price | $ / shares     $ 10,272.13                
Equity Offering, Maximum Without Approval     $ 2,000,000                
October 2024 SPA [Member] | Series A-1 Preferred Stock [Member] | Chief Executive Officer, Secretary, and Director [Member]                      
Stock Issued During Period, Shares, New Issues (in shares) | shares     150                
Preferred Stock, Par or Stated Value Per Share | $ / shares     $ 10,000                
Preferred Stock, Convertible, Conversion Ratio     2,903                
Preferred Stock, Convertible, Conversion Price | $ / shares     $ 3.445                
Equity Offering, Maximum Amount     $ 5,000,000                
Preferred Stock, Convertible, Shares Issuable | shares     435,414                
Preferred Stock, Convertible, Maximum Beneficial Ownership     19.99%                
Preferred Stock, Dividend Rate, Percentage     10.00%                
At The Market Offering Agreement [Member]                      
Stock Issued During Period, Shares, New Issues (in shares) | shares           1,177,568          
Equity Offering, Maximum Amount                 $ 2,260,000    
Stock Issued During Period, Value, New Issues           $ 3,400,000