SHAREHOLDERS' EQUITY (Details) - USD ($) $ / shares in Units, $ in Millions				1 Months Ended	6 Months Ended	12 Months Ended
	Dec. 23, 2015	Dec. 18, 2015	Jan. 21, 2014	Jul. 31, 2011	Jun. 30, 2016	Dec. 31, 2013
Shareholders' Equity
Amount of net capacity remaining on the ATM					$ 7.8
Common Stock, Value, Registered on Form S-3				$ 100.0
Common Stock
Shareholders' Equity
Conversion of Stock, Shares Converted	1,250,000	1,250,000
Conversion of Stock, Amount Converted	$ 3.2
Series A Preferred Stock
Shareholders' Equity
Conversion of Stock, Shares Issued	1,250	1,250
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%