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Note 2 - Marketable Securities and Investment Other Securities (Tables)
12 Months Ended
Sep. 30, 2022
Notes Tables  
Fair Value, Assets Measured on Recurring Basis [Table Text Block]
          
  In Active       
  Markets for  

Significant Other

    
  Identical Assets  Observable  Total Fair Value 
  and Liabilities  Inputs  at September 30, 
  

(Level 1)

  

(Level 2)

  

2022

 

Balance at September 30, 2020

 $26,472  $-  $26,472 

Change in value of equities

  6,879   -   6,879 

Additional Investment

  -   -   - 

Balance at September 30, 2021

  33,351   -   33,351 

Change in value of equities

  (33,351)     (33,351)

Additional Investment

  -      - 

Balance at September 30, 2022

 $-  $-  $-