FAIR VALUE - Activity of Level 3 inputs measured on a recurring basis (Details) - Common Stock Warrants	12 Months Ended
	Sep. 30, 2015 USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at October 1, 2014	$ 1,096,412
Adjustment resulting from change in value recognized in earnings (a)	2,994,540	[1]
Reclassification of warrant upon repurchase	(4,090,952)
Reclassification to equity upon exercise
Balance at September 30, 2015

[1] Adjustment resulting from change in fair value is the amount of total gains or losses for the period attributable to the change in unrealized gains or losses relating to liabilities held at the reporting date and realized gains or losses at the date of exercise. The gain or loss is recorded in change in fair value of warrant liability in the accompanying consolidated statements of operations.