Income Taxes (Details 2) - USD ($)	Sep. 30, 2017	Sep. 30, 2016
Deferred tax assets
Net operating loss carryforwards	$ 48,828,141	$ 36,146,789
Stock compensation	14,098,985	11,249,314
Deferred revenue	3,017,238	2,542,558
Research and development credit carryforward	757,701	757,701
Foreign tax credits	2,857,309	2,257,309
Accruals and others	1,539,943	1,287,592
Gross deferred tax assets	71,099,317	54,241,263
Less: valuation allowance	(69,902,446)	(52,737,104)
Deferred tax assets net of valuation allowance	1,196,871	1,504,159
Deferred tax liability:
Fixed assets	(1,196,871)	(1,504,159)
Net deferred tax assets	$ 0	$ 0