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RESEARCH AND LICENSE AGREEMENTS WITH PRINCETON UNIVERSITY, UNIVERSITY OF SOUTHERN CALIFORNIA AND THE UNIVERSITY OF MICHIGAN (Details) (USD $)
 3 Months Ended 6 Months Ended 120 Months Ended 36 Months Ended 48 Months Ended 13 Months Ended 32 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Jul. 31, 2007
1997 Research Agreement [Member]
Apr. 30, 2009
2006 Research Agreement - Original Term [Member]
Apr. 30, 2013
2006 Research Agreement - Original Term [Member]
Jun. 30, 2014
2006 Research Agreement - Extended Term [Member]
Dec. 31, 2011
2006 Research Agreement - Extended Term [Member]
Jun. 30, 2014
1997 Amended License Agreement [Member]
Jun. 30, 2013
1997 Amended License Agreement [Member]
Jun. 30, 2014
1997 Amended License Agreement [Member]
Jun. 30, 2013
1997 Amended License Agreement [Member]
Research and Development Arrangement, Contract to Perform for Others [Line Items]                          
Term of agreement (in years)         10 years 3 years 4 years   4 years        
Research and development expense incurred           $ 5,000,000   $ 1,300,000          
Maximum obligation               7,300,000          
Royalty rate for licensed products sold by the Company (in hundredths)                       3.00%  
Royalty rate for licensed products sold by the Company's sublicenses (in hundredths)                       3.00%  
Minimum royalty payment per year                       100,000  
Royalty expense 1,501,000 1,172,000 2,257,000 1,484,000           1,499,000 1,200,000 2,228,000 1,500,000
Minimum investment per year                       $ 800,000