Quarterly report pursuant to Section 13 or 15(d)

STOCKHOLDERS' EQUITY (Details)

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STOCKHOLDERS' EQUITY (Details)
 6 Months Ended
Jun. 30, 2016
$ / shares
shares
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 4,629,842
April 2016 Underwritten Registered Warrants [Member]  
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 3,626,942
Exercise Price (in dollars per share) | $ / shares $ 3.04
Warrants Expiration Date Aug. 20, 2021
October 2015 Incremental Series A Warrants [Member]  
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 300,006
Exercise Price (in dollars per share) | $ / shares $ 2.13
Warrants Expiration Date Oct. 20, 2021
October 2015 Registered Direct Series A Warrants [Member]  
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 86,365
Exercise Price (in dollars per share) | $ / shares $ 2.13
Warrants Expiration Date Apr. 01, 2021
October 2015 Placement Agent [Member]  
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 3,750
Exercise Price (in dollars per share) | $ / shares $ 28.3
Warrants Expiration Date Oct. 01, 2020
August 2014 Public Offering [Member]  
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 504,019 [1]
Exercise Price (in dollars per share) | $ / shares $ 46.8 [1]
Warrants Expiration Date Aug. 20, 2019 [1]
February 2013 Public Offering [Member]  
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 38,750 [2]
Exercise Price (in dollars per share) | $ / shares $ 2.13 [2]
Warrants Expiration Date Feb. 20, 2018 [2]
February 2013 Public Offering - Placement Agents [Member]  
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 3,854
Exercise Price (in dollars per share) | $ / shares $ 125
Warrants Expiration Date Feb. 04, 2018
November 2012 Private Placement [Member]  
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 5,000
Exercise Price (in dollars per share) | $ / shares $ 250
Warrants Expiration Date Nov. 02, 2017
June 2012 Public Offering [Member]  
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 14,910
Exercise Price (in dollars per share) | $ / shares $ 250
Warrants Expiration Date Jun. 13, 2017
December 2011 Underwritten Offering [Member]  
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 46,246
Exercise Price (in dollars per share) | $ / shares $ 120
Warrants Expiration Date Dec. 06, 2016
[1] These warrants have a certain type of cash settlement feature and the warrants have been accounted for as derivative instruments as described in Note 3, with the exception of 9,704 warrants issued to the underwriter.
[2] These warrants’ exercise prices are subject to adjustment for “down-rounds” and the warrants have been accounted for as derivative instruments as described in Note 3.