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FAIR VALUE MEASUREMENTS (Details) (Recurring basis, USD $)
Jun. 30, 2012
Dec. 31, 2011
Level 1
    
ASSETS    
Cash equivalents $ 16,687,000 $ 19,894,000
Total assets 16,687,000 19,894,000
Level 3
    
LIABILITIES    
Economic rights 1,007,000  
Warrants 1,000 51,000
Scottish Enterprise agreement 20,000 20,000
Other liabilities measured at fair value 21,000 71,000
Total liabilities 1,028,000 71,000
Total
    
ASSETS    
Cash equivalents 16,687,000 19,894,000
Total assets 16,687,000 19,894,000
LIABILITIES    
Economic rights 1,007,000  
Warrants 1,000 51,000
Scottish Enterprise agreement 20,000 20,000
Other liabilities measured at fair value 21,000 71,000
Total liabilities $ 1,028,000 $ 71,000