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Note 8 - Stock Based Compensation (Tables)
6 Months Ended
Mar. 31, 2025
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

  5,531  $989.72   3.14  $- 

Granted

  -   -   -   - 

Exercised

  -   -   -   - 

Forfeited

  (14)  82.80   -   - 

Outstanding at March 31, 2025

  5,517   992.03   2.64   - 
                 

Exercisable at March 31, 2025

  5,517  $992.03   2.64  $-