Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Stock-based Compensation (Details Textual)

v3.23.2
Note 6 - Stock-based Compensation (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Jun. 18, 2013
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Oct. 01, 2022
Sep. 30, 2022
Sep. 30, 2021
Common Stock, Shares Authorized   12,000,000   12,000,000     4,000,000  
Research and Development Expense [Member]                
Share-Based Payment Arrangement, Expense   $ 7,000 $ 29,000 $ 55,000 $ 123,000      
General and Administrative Expense [Member]                
Share-Based Payment Arrangement, Expense   34,000 52,000 156,000 245,000      
Employees Directors And Consultants [Member]                
Share-Based Payment Arrangement, Expense   41,000 81,000 211,000 367,000      
Non Employee Restricted Shares [Member]                
Share-Based Payment Arrangement, Expense   $ 0 $ 10,000 $ 3,000 $ 30,000      
The 2013 Plan [Member]                
Common Stock, Shares Authorized           185,571   170,571
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized 15,000              
Share-based Payment Arrangement, Annual Increase in Authorized Shares, Maximum Percentage of Common Stock Outstanding 4.00%              
Increase In Aggregate Number Of Shares           15,000    
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Available for Grant   0   0        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount   $ 200,000   $ 200,000        
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition       2 years 1 month 9 days        
The 2013 Plan [Member] | Restricted Stock [Member] | Board Of Directors And Management [Member]                
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Granted (in shares)       20,875        
The 2013 Plan [Member] | Restricted Stock [Member] | Consultants [Member]                
Share-Based Compensation Arrangement by Share-Based Payment Award, Non-Option Equity Instruments, Other (in shares)       3,625