STOCKHOLDERS' EQUITY (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Mar. 31, 2014	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
Stock issued	$ 37.4	$ 17.1
Stock offering costs	$ 2.8	$ 1.6
Issuance of common stock, net of offering costs (in shares)	18,720,000	10,651,280
Price per share	$ 2.15	$ 1.75
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			8,500,000
ESPP Shares [Member]
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Common stock, shares reserved for future issuance			3,400,000