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           3. Summary of Significant Accounting Policies (Details 6) (USD $) 
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           Nov. 10, 2011 
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           Mar. 31, 2013
 
          Warrants Revalued [Member] 
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           Dec. 31, 2012
 
          Warrants Revalued [Member] 
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|---|---|---|---|
| Expected life (in months) | 60 months | 43 months | 46 months | 
| Expected volatility | 104.50% | 133.70% | 146.40% | 
| Risk-free interest rate | 0.875% | 0.36% | 0.44% | 
| Exercise price | $ 0.81 | $ 0.40 | $ 0.40 | 
| Fair value per warrant | $ 0.54 | $ 0.20 | $ 0.15 | 
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