Fair Value Assumptions Used in Accounting for Derivative Warrant Liability - Derivative Liabilities (Details 1) (USD $)	6 Months Ended	12 Months Ended
Jan. 31, 2014	Jul. 31, 2013	Jul. 31, 2012	Jun. 04, 2013	Mar. 05, 2013	Feb. 05, 2013	Jun. 06, 2012
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Current exercise price	$ 0.03	$ 0.03	$ 0.15
Time to expiration	4 months 17 days	3 years 6 months	3 years 10 months 24 days
Risk-free interest rate	0.06%	0.49%	0.45%
Estimated volatility	67.00%	85.00%	85.00%
Dividend	0.00%	0.00%	0.00%
Stock price at period end date	$ 0.042	$ 0.035	$ 0.093	$ 0.0325	$ 0.034	$ 0.038	$ 0.0925

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Agreed upon price for the exchange of the underlying asset.

+ References

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=25499696&loc=d3e19207-110258

+ Details

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- Definition

Expected dividends to be paid to holders of the underlying shares or financial instruments (expressed as a percentage of the share or instrument's price).

+ References

+ Details

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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.

+ References

+ Details

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- Definition

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

+ References

+ Details

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- Definition

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

+ References

+ Details

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

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