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Stockholders' Equity - Schedule of Warrant Activity (Details) - shares
12 Months Ended
Jul. 31, 2017
Jul. 31, 2016
Equity [Abstract]    
Warrants outstanding begining balance 7,056,426 5,035,156
Warrants issued 1,724,235 20,376,219
Warrant exercised (347,451) (2,898,670)
Warrants expired (129,374) (15,456,279)
Warrant outstanding ending balance 8,303,836 7,056,426