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Accounts Receivable
9 Months Ended
Jun. 30, 2018
Accounts Receivable [Abstract]  
Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
Accounts Receivable

Accounts receivable is stated net of an allowance for uncollectible accounts of $713,000 and $946,000 as of June 30, 2018 and September 30, 2017, respectively.