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Note 6 - Line-of-credit - Available Borrowing Limits (Details) - USD ($)
Mar. 01, 2025
Oct. 01, 2024
Sep. 30, 2024
Sep. 30, 2023
Available Line of Credit     $ 20,000,000 $ 13,000,000
Line of Credit [Member]        
Available Line of Credit     $ 20,000,000  
Line of Credit [Member] | Forecast [Member]        
Available Line of Credit $ 15,000,000 $ 25,000,000