CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (DEFICIT) - USD ($)	Preferred Stock	Common Stock	Additional Paid in Capital	Accumulated Deficit	Total
Balance at Sep. 30, 2013		$ 13,109	$ 191,296,539	$ (186,693,611)	$ 4,616,037
Balance (in shares) at Sep. 30, 2013		13,108,783
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Reclassification of warrants upon exercise			2,455,042		$ 2,455,042
Exercise of warrants cashlessly		$ 326	(326)
Exercise of warrants cashlessly (in shares)		326,164
Common stock issued for settlement of consulting services		$ 42	337,459		$ 337,501
Common stock issued for settlement of consulting services (in shares)		41,667
Shares issued in private placement		$ 314	2,155,950		$ 2,156,264
Shares issued in private placement (in shares)		313,757
Exercise of options cashlessly		$ 146	(146)
Exercise of options cashlessly (in shares)		145,583
Stock based compensation expense			2,033,341		$ 2,033,341
Net loss				$ (13,066,661)	(13,066,661)
Balance at Sep. 30, 2014		$ 13,937	198,277,859	$ (199,760,272)	$ (1,468,476)
Balance (in shares) at Sep. 30, 2014		13,935,954			13,935,954
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Other		$ 6	(6)
Other (in shares)		6,440
Exercise of warrants and options cashlessly		$ 4	(4)
Exercise of warrants and options cashlessly (in shares)		4,376
Common stock issued for settlement of consulting services		$ 41	136,240		$ 136,281
Common stock issued for settlement of consulting services (in shares)		40,500
Shares issued in underwritten public offerings, net of offering costs		$ 6,950	18,926,364		18,933,314
Shares issued in underwritten public offerings, net of offering costs (in shares)		6,950,000
Shares and warrants issued upon conversion of promissory notes and accrued interest		$ 567	2,824,024		2,824,591
Shares and warrants issued upon conversion of promissory notes and accrued interest (in shares)		567,308
Stock based compensation expense			$ 4,022,283		4,022,283
Net loss				$ (11,881,137)	(11,881,137)
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			21,504,578