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Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares
Jun. 30, 2018
Sep. 30, 2017
Common stock, par value (in dollars per share) $ 0.10 $ 0.10
Common stock, authorized (in shares) 7,000,000 7,000,000
Common stock, issued (in shares) 1,849,025 1,839,877
Common stock, outstanding (in shares) 1,849,025 1,839,877