Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS' EQUITY (Details)

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STOCKHOLDERS' EQUITY (Details) - $ / shares
 12 Months Ended
Dec. 31, 2015
Aug. 20, 2014
Class of Warrant or Right [Line Items]    
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 861,314 9,699
October 2015 Registered Offering [Member]    
Class of Warrant or Right [Line Items]    
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) [1] 150,000  
Exercise Price (in dollars per share) [1] $ 28.30  
Warrants Expiration Date [1] Apr. 01, 2021  
October 2015 Private Placement [Member]    
Class of Warrant or Right [Line Items]    
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) [1] 48,273  
Exercise Price (in dollars per share) [1] $ 22.00  
Warrants Expiration Date [1] Oct. 01, 2020  
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) $ 28.30  
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) [1] 504,001  
Exercise Price (in dollars per share) [1] $ 46.80  
Warrants Expiration Date [1] Aug. 20, 2019  
February 2013 Public Offering [Member]    
Class of Warrant or Right [Line Items]    
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) [1] 55,000  
Exercise Price (in dollars per share) [1],[2] $ 22.00  
Warrants Expiration Date [1] Feb. 20, 2018  
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) 3,850  
Exercise Price (in dollars per share) $ 125.00  
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) $ 250.00  
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) 14,907  
Exercise Price (in dollars per share) $ 250.00  
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) 46,241  
Exercise Price (in dollars per share) $ 120.00  
Warrants Expiration Date Dec. 06, 2016  
April 2011 Private Placement [Member]    
Class of Warrant or Right [Line Items]    
Number of Shares Issuable Upon Exercise of Outstanding Warrants (in shares) 30,292  
Exercise Price (in dollars per share) $ 150.00  
Warrants Expiration Date Mar. 31, 2016  
[1] These warrants have a certain type of cash settlement feature or their exercise prices or the number of shares 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 9,699 warrants issued in August 2014.
[2] Due to the issuance of common stock at $22.00 per share as part of the October 2015 Registered Offering, the remaining outstanding warrants issued as part of the February 2013 Public Offering were adjusted to reflect the revised exercise price of $22.00 each.