Quarterly report pursuant to Section 13 or 15(d)

Note 6 - Stock-based Compensation - Stock Compensation Activity (Details)

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Note 6 - Stock-based Compensation - Stock Compensation Activity (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2022
Sep. 30, 2022
Outstanding, Option Shares Outstanding (in shares) 98,626  
Outstanding, Weighted Average Exercise Price (in dollars per share) $ 52.00  
Outstanding, Weighted Average Remaining Contractual Term (years) (Year)   1 year 5 months 15 days
Outstanding, Aggregate Intrinsic Value $ 3,900 $ 16,900
Awarded, Option Shares Outstanding (in shares) 24,500  
Awarded, Weighted Average Exercise Price (in dollars per share) $ 6.00  
Forfeited/Cancelled, Option Shares Outstanding (in shares) (18,801)  
Forfeited/Cancelled, Weighted Average Exercise Price (in dollars per share) $ 70.00  
Outstanding, Option Shares Outstanding (in shares) 104,325 98,626
Outstanding, Weighted Average Exercise Price (in dollars per share) $ 40.00 $ 52.00
Vested, Option Shares Outstanding (in shares) 68,202  
Vested, Weighted Average Exercise Price (in dollars per share) $ 54.00  
Vested, Weighted Average Remaining Contractual Term (years) (Year) 1 year 6 months  
Vested, Aggregate Intrinsic Value $ 975  
Vested and expected to vest, Option Shares Outstanding (in shares) 104,325  
Vested and expected to vest, Weighted Average Exercise Price (in dollars per share) $ 40.00  
Vested and expected to vest,Weighted Average Remaining Contractual Term (years) (Year) 1 year 3 months 3 days  
Vested and expected to vest, Aggregate Intrinsic Value $ 3,900