Annual report pursuant to Section 13 and 15(d)

Note 12 - Stock-based Compensation - Stock Compensation Activity (Details)

v3.24.0.1
Note 12 - Stock-based Compensation - Stock Compensation Activity (Details) - USD ($)
 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Outstanding, Option Shares Outstanding (in shares) 98,626 124,495  
Outstanding, Weighted Average Exercise Price (in dollars per share) $ 52 $ 58  
Outstanding, Weighted Average Remaining Contractual Term (Year) 3 years 10 months 24 days 1 year 5 months 15 days 1 year 10 months 9 days
Outstanding, Aggregate Intrinsic Value $ 0 $ 16,900 $ 140,151
Awarded, Option Shares Outstanding (in shares) 24,500 6,625  
Awarded, Weighted Average Exercise Price (in dollars per share) $ 8 $ 6  
Forfeited/Cancelled, Option Shares Outstanding (in shares) (21,001) (32,494)  
Forfeited/Cancelled, Weighted Average Exercise Price (in dollars per share) $ 68 $ 70  
Outstanding, Option Shares Outstanding (in shares) 102,125 98,626 124,495
Outstanding, Weighted Average Exercise Price (in dollars per share) $ 38 $ 52 $ 58
Vested, Option Shares Outstanding (in shares) 82,940    
Vested, Weighted Average Exercise Price (in dollars per share) $ 44    
Vested, Weighted Average Remaining Contractual Term (Year) 4 years 10 months 20 days    
Vested, Aggregate Intrinsic Value $ 0    
Vested and expected to vest, Option Shares Outstanding (in shares) 102,125    
Vested and expected to vest, Weighted Average Exercise Price (in dollars per share) $ 38    
Vested and expected to vest,Weighted Average Remaining Contractual Term (Year) 3 years 10 months 24 days    
Vested and expected to vest, Aggregate Intrinsic Value $ 0