PIPE TRANSACTION PIPE TRANSACTION- Calculation of Carrying Value of Preferred Stock (Details) - USD ($)	Mar. 09, 2015	Sep. 30, 2015	Dec. 31, 2014
Temporary Equity [Line Items]
Issuance date liquidation preference		$ 66,661,629	$ 0
Initial carrying value of Series A Preferred Stock		60,783,000	0
Payments of Stock Issuance Costs	$ 4,000,000
PIPE Warrants [Member]
Temporary Equity [Line Items]
Payments of Stock Issuance Costs	200,000
Series A Preferred Stock
Temporary Equity [Line Items]
Issuance date liquidation preference	62,500,000
Initial carrying value of Series A Preferred Stock	52,380,000	$ 60,783,000	$ 52,902,000
Payments of Stock Issuance Costs	3,800,000
Warrant Value | Series A Preferred Stock
Temporary Equity [Line Items]
Discount on issuance	(3,145,000)
Beneficial Conversion Feature | Series A Preferred Stock
Temporary Equity [Line Items]
Discount on issuance	(3,145,000)
Issuance Costs | Series A Preferred Stock
Temporary Equity [Line Items]
Discount on issuance	$ (3,830,000)