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8. FAIR VALUE MEASUREMENTS (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2012 | Dec. 31, 2011
Significant assumptions used in the valuations |  |
Fair value | $ 6,495 | $ 1,921
Warrants issued in October 2010 [Member] |  |
Significant assumptions used in the valuations |  |
Exercise price | $ 0.12 | $ 0.45
Volatility | 75.60% | 68.00%
Risk free interest rate | 0.62% | 1.09%
Term (years) | 5 years 1 month 7 days | 5 years 11 months 2 days
Marketability discount | 48.00% | 47.40%
Fair value | 43 | 226
Warrants issued in December 2011 [Member] |  |
Significant assumptions used in the valuations |  |
Exercise price | $ 0.84 | $ 1.5
Volatility | 77.70% | 68.00%
Risk free interest rate | 0.47% | 0.83%
Term (years) | 4 years 3 months 17 days | 4 years 11 months 16 days
Marketability discount | 55.90% | 52.00%
Fair value | 585 | 1,695
Warrants 1 Issued July 2012 [Member] |  |
Significant assumptions used in the valuations |  |
Exercise price | $ 0.5 |
Volatility | 76.80% |
Risk free interest rate | 0.62% |
Term (years) | 4 years 9 months 10 days |
Marketability discount | 57.50% |
Fair value | 3,351 |
Warrants 2 Issued July 2012 [Member] |  |
Significant assumptions used in the valuations |  |
Exercise price | $ 0.43 |
Volatility | 73.90% |
Risk free interest rate | 0.17% |
Term (years) | 1 year 3 months 1 day |
Marketability discount | 57.50% |
Fair value | 858 |
Warrants Issued September 2012 [Member] |  |
Significant assumptions used in the valuations |  |
Exercise price | $ 0.59 |
Volatility | 74.10% |
Risk free interest rate | 0.31% |
Term (years) | 3 years |
Marketability discount | 58.50% |
Fair value | $ 1,658 |

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- Definition Agreed upon price for the exchange of the underlying asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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