Income Taxes - Deferred income taxes (Details) - USD ($)	Jul. 31, 2016	Jul. 31, 2015
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 86,895,338	$ 86,370,251
Other temporary differences	150,004	338,000
Intangible assets		108,022
Total Deferred Tax Assets	87,045,342	86,816,273
Valuation Allowance	(86,678,987)	(86,816,273)
Deferred Tax Liabilities
Intangible assets	(366,355)
Other temporary differences
Total Deferred Tax Liabilities
Net Deferred Income Taxes