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Marketable Securities and Fair Value Measurements (Details 1) - 6 months ended Jun. 30, 2015 - $ / shares
Total
Assumptions used to estimate the fair values of the common stock warrants  
Risk-free interest rate 1.01%
Expected volatility 81.00%
Expected life in years 3 years 3 months
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 0.28%
Expected life in years 1 year 3 months
OncoSec common stock warrants [Member] | Maximum [Member]  
Assumptions used to estimate the fair values of the common stock warrants  
Risk-free interest rate 0.64%
Expected life in years 1 year 9 months