Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS' EQUITY (Details)

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STOCKHOLDERS' EQUITY (Details)
 12 Months Ended
Dec. 31, 2017
$ / shares
shares
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 11,830,074
November 2016 Public Offering Series C [Member]  
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 4,157,850
Exercise Price (in dollars per share) | $ / shares $ 1.5
Warrants Expiration Date Nov. 29, 2021
April 2016 Underwritten Registered Series A [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 Apr. 20, 2021
October 2015 Incremental Series A [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 Private Placement Series A [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 Offering - 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 [1]
Exercise Price (in dollars per share) | $ / shares $ 1.5 [1],[2]
Warrants Expiration Date Feb. 20, 2018 [1]
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
October 2017 Series D warrants [Member]  
Class of Warrant or Right [Line Items]  
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 3,108,538
Exercise Price (in dollars per share) | $ / shares $ 1.78
Warrants Expiration Date Oct. 14, 2024
[1] These warrants have a certain type of cash settlement feature or their exercise price for which the warrant may be exercised are subject to adjustment for “down rounds” and the warrants have been accounted for as derivative instruments as described in Note 3, with the exception of 9,704 warrants issued in August 2014.
[2] Due to the issuance of common stock at $1.50 per share as part of the November 2016 Underwritten Offering, the remaining outstanding warrants issued as part of the February 2013 Public Offering were adjusted to reflect the revised exercise price of $1.50 each.