Marketable Securities and Fair Value Measurements (Details 1) (USD $)	6 Months Ended
Jun. 30, 2012
Assumptions used to estimate the fair values of the common stock warrants
Dividend yield
Minimum [Member]
Assumptions used to estimate the fair values of the common stock warrants
Risk-free interest rate	0.19%
Expected volatility	62.00%
Expected life in years	2 years
Maximum [Member]
Assumptions used to estimate the fair values of the common stock warrants
Risk-free interest rate	0.72%
Expected volatility	127.00%
Expected life in years	4 years 5 months 9 days
OncoSec common stock warrants [Member]
Assumptions used to estimate the fair values of the common stock warrants
Risk-free interest rate	0.39%
Expected volatility	125.00%
Dividend yield
OncoSec common stock warrants [Member] \| Minimum [Member]
Assumptions used to estimate the fair values of the common stock warrants
Expected life in years	4 years 3 months
OncoSec common stock warrants [Member] \| Maximum [Member]
Assumptions used to estimate the fair values of the common stock warrants
Expected life in years	4 years 9 months

Amount of dividends expected to be paid to holders of the underlying shares or contracted instruments over the term of the instruments life.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (e)

-URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258

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- Definition

Period the instrument, asset or liability is expected to be outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

Measure of dispersion, in percentage terms (for instance, the standard deviation or variance), for a given stock price.

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- Definition

Risk-free interest rate assumption used in valuing an instrument.

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