CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)	Common Stock	Additional Paid in Capital	Accumulated Deficit	Total
Balance at Sep. 30, 2015	$ 21,505	$ 224,186,760	$ (211,641,409)	$ 12,566,856
Balance (in shares) at Sep. 30, 2015	21,504,578
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of warrants and options cashlessly	$ 49	(49)
Exercise of warrants and options cashlessly (in shares)	48,918
Common stock issued for consulting services	$ 24	78,106		78,130
Common stock issued for consulting services (in shares)	24,000
Shares issued in underwritten public offerings, net of offering costs	$ 2,500	7,850,655		7,853,155
Shares issued in underwritten public offerings, net of offering costs (in shares)	2,500,000
Exercise of warrants for cash	$ 1	4,409		4,410
Exercise of warrants for cash (in shares)	1,260
Stock based compensation expense		2,038,830		2,038,830
Net loss			(12,175,979)	(12,175,979)
Balance at Sep. 30, 2016	$ 24,079	234,158,711	(223,817,388)	$ 10,365,402
Balance (in shares) at Sep. 30, 2016	24,078,756			24,078,756
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued in private placement, net of offering costs	$ 1,025	1,770,252		$ 1,771,277
Common stock issued in private placement, net of offering costs (in shares)	1,025,574
Common stock and warrants issued in private placement, net of offering costs	$ 2,273	4,317,590		4,319,863
Common stock and warrants issued in private placement, net of offering costs (in shares)	2,272,727
Stock based compensation expense		3,257,305		3,257,305
Net loss			(12,855,767)	(12,855,767)
Balance at Sep. 30, 2017	$ 27,377	$ 243,503,858	$ (236,673,155)	$ 6,858,080
Balance (in shares) at Sep. 30, 2017	27,377,057			27,377,057