Exercise price of the warrants.

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Gross amount of debt extinguished.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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Value of outstanding derivative securities that permit the holder the right to purchase securities (usually equity) from the issuer at a specified price.

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Promissory Note (Narrative II) (Details) - USD ($)	1 Months Ended	12 Months Ended
Promissory Note (Narrative II) (Details) - USD ($)	Jan. 25, 2013	Jul. 31, 2015	Jul. 31, 2014	Aug. 29, 2014
Promissory Note [Line Items]
Number of warrants to purchase common stock				4,652,313
Dividend yield		0.00%	0.00%
Volatility rate			108.00%
Risk-free interest rate			0.45%
Expected life			2 years 3 months 26 days
Gain on extinguishment of debt			$ 727,000
Morrison And Foerster L.L.P. [Member]
Promissory Note [Line Items]
Number of warrants to purchase common stock	375,000
Exercise price of warrants	$ 0.83
Fair value of warrants	$ 245,000
Dividend yield	0.00%
Volatility rate	134.00%
Risk-free interest rate	0.35%
Expected life	5 years
Repayment of unsecured debt			500,000
Extinguishment of unsecured debt			1,227,000
Gain on extinguishment of debt			727,000
Amount paid under terms of the note			$ 28,000