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Marketable Securities and Fair Value Measurements (Details 1) (USD $)
9 Months Ended
Sep. 30, 2014
Assumptions used to estimate the fair values of the common stock warrants  
Risk-free interest rate 1.43%
Expected volatility 78.00%
Expected life 4 years
Dividend yield $ 0
OncoSec common stock warrants [Member]
 
Assumptions used to estimate the fair values of the common stock warrants  
Expected volatility 85.00%
Dividend yield $ 0
OncoSec common stock warrants [Member] | Minimum [Member]
 
Assumptions used to estimate the fair values of the common stock warrants  
Risk-free interest rate 0.58%
Expected life 2 years
OncoSec common stock warrants [Member] | Maximum [Member]
 
Assumptions used to estimate the fair values of the common stock warrants  
Risk-free interest rate 0.83%
Expected life 2 years 6 months