SHAREHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Millions	Jan. 21, 2014	Jun. 30, 2015
Shareholders' Equity
Amount of net capacity remaining on the ATM		$ 7.8
Lincoln Park
Shareholders' Equity
Period over which shares of common stock to be purchased (in months)	30 months
Floor price for sale of shares of common stock (in dollars per share)	$ 2.50
Value of remaining shares of common stock to be sold	$ 11.3
Lincoln Park | Minimum
Shareholders' Equity
Threshold closing sale price of the common stock on the date of a regular purchase to trigger purchase of additional amounts as accelerated purchases (in dollars per share)	$ 3.00
Lincoln Park | Maximum
Shareholders' Equity
Value of shares of common stock to be sold	$ 15.0
Number of shares of common stock to be purchased in regular purchases	50,000
Number of shares of common stock to be purchased depending upon the closing sale price of the common stock	100,000
Period of business days over which purchase price of shares of common stock will be determined	10 days
Threshold on percentage of outstanding shares of the common stock that can be beneficially owned by counterparty	9.99%