Income Taxes - Deferred income taxes (Details) - USD ($)	Jul. 31, 2018	Jul. 31, 2017
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 59,296,530	$ 88,428,273
Other temporary differences	(102,273)	4,132,264
Intangible assets	2,518,572
Total Deferred Tax Assets	61,712,829	92,560,537
Valuation Allowance	(61,712,829)	(92,560,537)
Deferred Tax Liabilities
Intangible assets
Other temporary differences
Total Deferred Tax Liabilities
Net Deferred Income Taxes