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Other Assets (Details) - USD ($)
 12 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2015
Other Assets      
Intangible assets, net of accumulated amortization of $531,637 and $529,037 at September 30, 2017 and September 30, 2016 $ 68,600 $ 71,200  
Other non-current assets 118,715 85,748  
Total other assets 187,315 156,948  
Accumulated amortization of intangible assets 531,637 529,037  
Impairment charges 0 0 $ 0
Intangible amortization expense 2,600 $ 12,000 $ 17,000
Prepaid software licenses $ 43,000