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Note 7 - Stockholders' Equity (Tables)
6 Months Ended
Mar. 31, 2024
Notes Tables  
Share-Based Payment Arrangement, Option, Activity [Table Text Block]
                   

Weighted

         
           

Weighted

   

Average

         
           

Average

   

Contractual

   

Aggregate

 
   

Number of

   

Exercise

   

Term

   

Intrinsic

 
   

Shares

   

Price

   

(Years)

   

Value

 

Exercisable at September 30, 2023

    1,700,000     $ 1.94       3.4     $ -  

Outstanding as of March 31, 2024

    1,700,000     $ 1.94       2.9     $ -  

Vested and expected to vest at March 31, 2024

    1,700,000     $ 1.94       2.9     $ -  

Exercisable at March 31, 2024

    1,700,000     $ 1.94       2.9     $ -  
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
                   

Weighted

         
           

Weighted

   

Average

         
           

Average

   

Contractual

   

Aggregate

 
   

Number of

   

Exercise

   

Term

   

Intrinsic

 
   

Shares

   

Price

   

(Years)

   

Value

 

Outstanding as of September 30, 2023

    2,148,000       1.33       1.13     $ -  

Outstanding as of March 31, 2024

    2,148,000       1.33       0.63     $ -  

Exercisable at March 31, 2024

    2,148,000       1.33       0.63     $ -