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5. Stockholders' Deficit - Fair value assumptions (Details) (USD $)
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3 Months Ended | 9 Months Ended | ||||||
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Sep. 30, 2012
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Sep. 30, 2012
Warrants Received
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Sep. 30, 2012
Series A
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Sep. 30, 2012
Series A (Affiliates)
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Sep. 30, 2012
Series B
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Sep. 30, 2012
Series C
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Sep. 30, 2012
Aug/Sep 2011 Notes
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Sep. 30, 2012
Feb 2012 PIPE
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| Assumptions | ||||||||
| Expected term (in months) | 6 years | 64 months | 4 months 3 days | 3 months 3 days | 3 months 3 days | 5 months 3 days | 2 months 3 days | 4 months 18 days |
| Expected volatility | 124.90% | 106.70% | 132.00% | 114.10% | 114.10% | 121.90% | 126.60% | 126.60% |
| Risk-free interest rate | 0.70% | 0.75% | 0.40% | 0.40% | 0.40% | 0.40% | 0.40% | 0.40% |
| Exercise price | $ 0.74 | $ 0.60 | $ 0.60 | $ 0.60 | $ 0.60 | $ 0.60 | $ 0.60 | |
| Fair Value per warrant | $ 0.46 | $ 0.03 | $ 0.03 | $ 0.03 | $ 0.03 | $ 0.03 | $ 0.03 | |
| X | ||||||||||
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- Definition
No authoritative reference available. No definition available.
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| X | ||||||||||
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- Definition
Agreed upon price for the exchange of the underlying asset. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The range of expected volatilities used and the weighted-average expected volatility for an entity using a valuation technique with different volatilities during the contractual term. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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