v3.26.1
Note 8 - Stockholders' Equity (Details Textual) - USD ($)
 3 Months Ended 9 Months Ended
Jul. 14, 2026
Jul. 01, 2026
Apr. 01, 2026
Jan. 30, 2026
Mar. 26, 2025
Mar. 25, 2025
Mar. 24, 2025
Mar. 05, 2025
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2025
Jun. 30, 2026
Jun. 30, 2025
Sep. 30, 2025
Sep. 16, 2025
May 14, 2021
Mar. 31, 2019
Oct. 17, 2018
Preferred Stock, Shares Authorized (in shares)                 1,000,000     1,000,000   1,000,000        
Common Stock, Par or Stated Value Per Share (in dollars per share)               $ 0.001 $ 0.001     $ 0.001   $ 0.001        
Stock Issued During Period, Value, New Issues                     $ 1,983,000              
Proceeds from Issuance of Common Stock                       $ 0 $ 1,983,000          
Preferred Stock, Par or Stated Value Per Share (in dollars per share)                 $ 0.001     $ 0.001   $ 0.001        
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Forfeitures in Period (in shares)               108       110,340            
Payments for Repurchase of Convertible Preferred Stock                       $ (0) $ 331,000          
Stock Redeemed or Called During Period, Value                     331,000              
Warrants Exercisable Term (Month)                       6 months            
Warrants and Rights Outstanding, Term (Year)                 5 years     5 years            
Class of Warrant or Right, Exercised During Period (in shares)                 0 0   0 0          
Class of Warrant or Right, Redeemed During Period (in shares)                   13,000     13,000          
Class of Warrant or Right, Expired During Period (in shares)                 166,536 0   199,427 0          
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)     10,000 250,000               260,000            
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)     $ 0.9 $ 0.82               $ 0.82            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period (in shares)                       1,000            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Intrinsic Value                 $ 160,000     $ 160,000            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Intrinsic Value                 74,000     $ 74,000            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted-Average Remaining Contractual Term (Year)                       6 years 6 months            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercisable, Weighted-Average Remaining Contractual Term (Year)                       6 years            
Share-Based Payment Arrangement, Option [Member]                                    
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount                 600,000     $ 600,000            
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)                       2 years 1 month 6 days            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)     3 years 3 years                            
Share-Based Payment Arrangement, Option [Member] | Subsequent Event [Member]                                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)   3 years                                
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)   25,000                                
Share-Based Compensation Arrangements by Share-Based Payment Award, Options, Grants in Period, Weighted Average Exercise Price (in dollars per share)   $ 1.2                                
Restricted Stock [Member]                                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)       390,000               375,165            
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share)       $ 0.82               $ 0.82            
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)       14,835                            
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value                 $ 54,000     $ 90,000            
Restricted Stock [Member] | Chief Executive Officer [Member]                                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)       300,000                            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)       3 years                            
Restricted Stock [Member] | Director [Member]                                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)       90,000                            
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)       1 year                            
Restricted Stock [Member] | Shares Per Director [Member]                                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)       22,500                            
The 2025 Stock Incentive Plan [Member]                                    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)                             1,500,000      
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant (in shares)                 563,907     563,907            
Additional Paid-in Capital [Member]                                    
Stock Issued During Period, Value, New Issues                     1,981,000              
Stock Redeemed or Called During Period, Value                     $ 331,000              
Placement Agent Warrants [Member]                                    
Class of Warrant or Right, Redeemed (in shares)               13,000                    
Warrants and Rights Outstanding, Term (Year)                               5 years    
Class of Warrant or Right, Issued During Period (in shares)         70,000                          
Class of Warrant or Right, Issued During Period, Exercise Price (in dollars per share)         $ 1.875                          
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)                               $ 2.85 $ 4  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                               179,536    
Series A Warrants [Member]                                    
Warrants and Rights Outstanding, Term (Year)                                 5 years 6 months  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)                                 $ 4  
Series B Warrants [Member]                                    
Warrants and Rights Outstanding, Term (Year)                                 24 months  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)                                 $ 4  
Series C Warrants [Member]                                    
Warrants and Rights Outstanding, Term (Year)                                 5 years 6 months  
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)                                 $ 0.05  
Class of Warrant or Right, Maximum Beneficial Ownership                                 4.99%  
Class of Warrant or Right, Maximum Beneficial Ownership, Election of Holder                                 9.99%  
Series D Preferred Stock Warrants [Member]                                    
Warrants and Rights Outstanding, Term (Year)                               5 years 6 months    
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)                               $ 2.51    
Class of Warrant or Right, Maximum Beneficial Ownership                               4.99%    
Class of Warrant or Right, Maximum Beneficial Ownership, Election of Holder                               9.99%    
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)                               592,106    
Series C Convertible Preferred Stock [Member]                                    
Preferred Stock, Shares Authorized (in shares)                                   11,000
Preferred Stock, Stated Value (in dollars per share)                                   $ 1,000
Preferred Stock, Shares Outstanding (in shares)               350 0     0   0        
Preferred Stock, Par or Stated Value Per Share (in dollars per share)               $ 0.001                    
Payments for Repurchase of Equity               $ 332,500                    
Payments for Repurchase of Convertible Preferred Stock               331,000                    
Preferred Stock, Carrying Value               0                    
Series C Convertible Preferred Stock [Member] | Additional Paid-in Capital [Member]                                    
Stock Redeemed or Called During Period, Value               $ 331,000                    
March 2025 Registered Direct Offering [Member]                                    
Stock Issued During Period, Shares, New Issues (in shares)             1,000,000                      
Common Stock, Par or Stated Value Per Share (in dollars per share)             $ 0.001                      
Shares Issued, Price Per Share (in dollars per share)             $ 1.5                      
Stock Issued During Period, Value, New Issues             $ 1,500,000                      
Proceeds from Issuance of Common Stock             $ 1,300,000                      
Placement Agent Fee, Percentage of Aggregate Purchase Price         7.00%                          
Private Placement [Member]                                    
Stock Issued During Period, Shares, New Issues (in shares)           473,979                        
Shares Issued, Price Per Share (in dollars per share)           $ 1.52                        
Stock Issued During Period, Value, New Issues           $ 720,000                        
Proceeds from Issuance of Common Stock           $ 700,000                        
ATM Sales Agreement July 14th, 2026 [Member]                                    
Stock Issued During Period, Shares, New Issues (in shares)                 0                  
ATM Sales Agreement July 14th, 2026 [Member] | Subsequent Event [Member] | WestPark [Member]                                    
Commission Rate 3.00%                                  
Reimbursable Expenses, Maximum Disbursement, Value $ 50,000                                  
Payments for Diligence Procedures, Quarterly 3,500                                  
ATM Sales Agreement July 14th, 2026 [Member] | Subsequent Event [Member] | WestPark [Member] | Maximum [Member]                                    
Reimbursable Expenses, Maximum Disbursement, Value 50,000                                  
Payments for Diligence Procedures, Quarterly $ 3,500