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Note 8 - Stock Based Compensation (Tables)
3 Months Ended
Dec. 31, 2024
Notes Tables  
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
  

Number of shares

  

Weighted-average exercise price

  

Weighted-average remaining contractual term (in years)

  

Aggregate intrinsic value (in thousands)

 

Outstanding at September 30, 2024

  44,035  $123.58   3.14  $- 

Granted

  -   -   -   - 

Exercised

  -   -   -   - 

Forfeited

  (112)  10.35   -   - 

Outstanding at December 31, 2024

  43,923   123.83   2.89   - 
                 

Exercisable at December 31, 2024

  43,923  $123.87   2.89  $-