Prepaid Expenses and Other Current Assets (Details) - USD ($)	Sep. 30, 2018	Sep. 30, 2017
Prepaid Expenses and Other Current Assets
Prepaid insurance	$ 258,015	$ 402,300
Income tax refund receivable	1,578	260,509
Other	284,641	429,255
Total prepaid expenses and other current assets	$ 544,234	$ 1,092,064