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Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - USD ($)
Jun. 30, 2024
Sep. 30, 2023
Accounts receivable, allowance for uncollectible $ 444,369 $ 155,164
Common stock, par value (in dollars per share) $ 5 $ 5
Common stock, shares authorized (in shares) 20,000,000 20,000,000
Common stock, shares issued (in shares) 10,193,160 10,015,254
Common stock, shares outstanding (in shares) 10,193,160 10,015,254
Preferred stock, par value (in dollars per share) $ 0 $ 0
Preferred stock, shares authorized (in shares) 5,000,000 5,000,000
Preferred stock, shares issued (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0