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NATURE OF OPERATIONS AND BASIS OF PRESENTATION (Details) (USD $)
 3 Months Ended 200 Months Ended 0 Months Ended 3 Months Ended 87 Months Ended 3 Months Ended
Mar. 31, 2013
Mar. 31, 2013
Dec. 31, 2012
Dec. 14, 2012
Aspire Capital Fund, LLC
Jan. 11, 2013
Preferred stock
Mar. 31, 2013
Preferred stock
item
Mar. 31, 2013
Preferred stock
Mar. 31, 2013
Common stock
Mar. 31, 2013
Common stock
Aspire Capital Fund, LLC
Nature of Operations                  
Grant awarded from UK Government's Biomedical Catalyst $ 1,900,000                
Recent Developments                  
Cash dividend declared per share (in dollars per share)         $ 0.15        
Dividend rate (as a percent)           6.00%      
Number of securities exchange agreements           3      
Number of shares issued upon conversion               1,513,653  
Preferred shares exchanged (in shares)           792,460 1,626,131    
Excess number of shares issued upon conversion               1,465,480  
Deemed dividend 8,366,000 11,881,000       8,400,000      
Preferred stock, shares outstanding 420,682 420,682 1,213,142     420,682 420,682    
Number of shares issued under purchase agreement       158,982         650,000
Purchase price for shares issued under purchase agreement       $ 1,000,000         $ 3,400,000