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Consolidated Statements of Operations (Parentheticals) - $ / shares
12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Income Statement [Abstract]      
Weighted average diluted earnings per common share $ 12.87 $ (2.63) $ 0.48
Weighted average common shares outstanding - diluted 2,092,326 2,323,601 2,677,891