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Net Loss Per Share (Details)
3 Months Ended
Oct. 31, 2014
Oct. 31, 2013
Net Loss Per Share [Abstract]    
Antidilutive shares 10,681,167us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount 7,450,766us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount