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FAIR VALUE MEASUREMENTS (Details) (Recurring basis, USD $) In Thousands, unless otherwise specified | Sep. 30, 2012 | Dec. 31, 2011
--- | --- | ---
Level 1 |  |
ASSETS |  |
Cash equivalents |  | $ 19,894
Total assets |  | 19,894
Level 2 |  |
ASSETS |  |
Cash equivalents | 14,592 |
Total assets | 14,592 |
Level 3 |  |
LIABILITIES |  |
Economic rights | 1,070 |
Warrants |  | 51
Scottish Enterprise agreement | 20 | 20
Other liabilities measured at fair value | 20 | 71
Total liabilities | 1,090 | 71
Total |  |
ASSETS |  |
Cash equivalents |  | 19,894
Total assets |  | 19,894
LIABILITIES |  |
Economic rights | 1,070 |
Warrants |  | 51
Scottish Enterprise agreement | 20 | 20
Other liabilities measured at fair value | 20 | 71
Total liabilities | $ 1,090 | $ 71

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