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Note 8 - Shareholders' Equity (Tables)
3 Months Ended
Dec. 31, 2023
Notes Tables  
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]
  

December 31,

  

December 31,

 
  

2023

  

2022

 

Exercise price

$

-

 $ 10.355 - 12.6060 

Risk free interest rate

  0.00%  3.93% - 4.71%

Volatility

  

0.00

%  106.48% - 106.51%

Expected term (in years)

  

-

   2.5 - 4 

Dividend yield

 

None

  

None