v2.4.0.8
Warrants (Details) (Warrant [Member])
9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Warrant [Member]
   
Weighted-average assumptions utilized in fair value calculations for warrants granted    
Expected dividend yield 0.00% 0.00%
Expected stock price volatility 134.00%  
Expected stock price volatility, minimum   93.00%
Expected stock price volatility, maximum   98.00%
Risk-free interest rate, minimum 1.73% 0.14%
Risk-free interest rate, maximum 1.75% 2.60%
Expected life of warrants, minimum 4 years 1 month 6 days 3 years 6 months
Expected life of warrants, maximum 8 years 9 months 18 days 9 years 3 months 18 days