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Note 6 - Capital Shares - Schedule of Preferred Shares (Details) - USD ($)
 3 Months Ended 6 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Mar. 31, 2025
Mar. 31, 2024
Balance (in shares)        
Balance $ 2,263,962 $ 5,844,878 $ 1,981,155 $ 7,048,800
Issuance of common shares 6,870,373 275,765 7,497,133 590,966
Preferred shares issuance costs $ (347,211) (73,492) $ (714,570) (97,949)
Balance (in shares) 15,539,598   15,539,598  
Balance $ 15,539,598 4,324,333 $ 15,539,598 4,324,333
Preferred return on Series A-1 Preferred Shares 0   $ 0  
Series B-1 Preferred Stock [Member] | Preferred Stock [Member]        
Balance (in shares)     0  
Balance 0 0 $ 0 0
Issuance of common shares (in shares)     834  
Issuance of common shares     $ 8,340,000  
Preferred shares issuance costs $ (171,937) 0 $ (171,937) 0
Balance (in shares) 834   834  
Balance $ 8,168,063 0 $ 8,168,063 0
Preferred return on Series A-1 Preferred Shares     $ 0  
Series A-1 Preferred Stock [Member] | Preferred Stock [Member]        
Balance (in shares)     0  
Balance 981,174 0 $ 0 0
Issuance of common shares (in shares)     150  
Issuance of common shares     $ 998,915  
Preferred shares issuance costs $ 0 0 $ (43,220) 0
Balance (in shares) 150   150  
Balance $ 1,017,750 $ 0 $ 1,017,750 $ 0
Preferred return on Series A-1 Preferred Shares $ 36,576   $ 62,055