STOCKHOLDERS' EQUITY (Details) (USD $)	1 Months Ended
	Jun. 30, 2014	Dec. 31, 2012	Sep. 30, 2013
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock, shares authorized	250,000,000		250,000,000
Common stock, par value (in dollars per share)	$ 0.01		$ 0.01
Issuance of common stock, net of offering costs	$ 26,600,000
Stock offering costs	$ 2,100,000
Issuance of common stock, net of offering costs (in shares)	8,582,076	10,651,280
Price per share	$ 3.35
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Preferred stock, shares authorized	10,000,000		10,000,000
Preferred stock, par value (in dollars per share)	$ 0.01		$ 0.01
Preferred stock, shares outstanding	0		0
Conversion of Debt, Shares Issued [Member]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock, shares reserved for future issuance	9,200,000
Stock Options [Member]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock, shares reserved for future issuance	8,400,000
ESPP Shares [Member]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock, shares reserved for future issuance	3,400,000