Income Taxes - Deferred income taxes (Details) - USD ($)	Jul. 31, 2017	Jul. 31, 2016
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 88,428,273	$ 86,895,338
Other temporary differences	4,132,264	150,004
Intangible assets
Total Deferred Tax Assets	92,560,537	87,045,342
Valuation Allowance	(92,560,537)	(86,678,987)
Deferred Tax Liabilities
Intangible assets		(366,355)
Other temporary differences
Total Deferred Tax Liabilities
Net Deferred Income Taxes