Net Loss per Share (Details Textual)	12 Months Ended
Jul. 31, 2012	Jul. 31, 2011	Jul. 31, 2010
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	94,643,712	115,875,372	44,892,383

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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-Name Accounting Standards Codification

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+ Details