Annual report pursuant to Section 13 and 15(d)

Preferred Stock Warrants and Warrant Liability (Details 1)

v2.4.0.8
Preferred Stock Warrants and Warrant Liability (Details 1) (Warrant [Member], USD $)
12 Months Ended
Dec. 31, 2011
Fair value of the warrants using binomial lattice valuation model  
Market value of stock at end of period $ 0.01
Expected dividend rate 0.00%
Shares underlying warrants outstanding classified as liabilities 41,558,259
Maximum [Member]
 
Fair value of the warrants using binomial lattice valuation model  
Exercise price $ 0.7345
Expected volatility 62.86%
Risk-free interest rate 3.18%
Expected life in years 9 years 10 months 24 days
Minimum [Member]
 
Fair value of the warrants using binomial lattice valuation model  
Exercise price $ 0.1198
Expected volatility 33.47%
Risk-free interest rate 0.03%
Expected life in years 3 years 4 months 24 days