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Prepaid Expenses and Other Current Assets (Details) - USD ($)
Sep. 30, 2017
Sep. 30, 2016
Prepaid Expenses and Other Current Assets    
Prepaid insurance $ 402,300 $ 386,212
Income tax refund receivable 260,509 106,932
Other 429,255 354,063
Total prepaid expenses and other current assets $ 1,092,064 $ 847,207