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Stockholders' Equity - Schedule of Warrant Activity (Details) - shares
12 Months Ended
Jul. 31, 2016
Jul. 31, 2015
Equity [Abstract]    
Outstanding, beginning balance 5,035,156 849,012
Issued 20,376,219 4,652,312
Exercised (2,898,670) (413,332)
Expired (15,456,279) (52,836)
Outstanding, ending balance 7,056,426 5,035,156