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Marketable Securities and Fair Value Measurements (Details 1)
9 Months Ended
Sep. 30, 2015
$ / shares
Assumptions used to estimate the fair values of the common stock warrants  
Risk-free interest rate 0.92%
Expected volatility 83.00%
Expected life in years 3 years
Dividend yield $ 0
OncoSec common stock warrants [Member]  
Assumptions used to estimate the fair values of the common stock warrants  
Expected volatility 90.00%
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 0.33%
Expected life in years 1 year
OncoSec common stock warrants [Member] | Maximum [Member]  
Assumptions used to estimate the fair values of the common stock warrants  
Risk-free interest rate 0.49%
Expected life in years 1 year 6 months