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Consolidated Balance Sheets (Parenthetical) - USD ($)
$ in Thousands
Sep. 30, 2018
Sep. 30, 2017
Statement of Financial Position [Abstract]    
Doubtful Accounts $ 520 $ 330
Serial preferred shares, shares authorized (in shares) 1,000,000 1,000,000
Common shares, par value (in dollars per share) $ 1 $ 1
Common shares, shares authorized (in shares) 10,000,000 10,000,000
Common shares, shares issued (in shares) 5,690,000 5,596,000
Common shares, shares outstanding (in shares) 5,690,000 5,596,000