Income Taxes - Deferred income taxes (Details) - USD ($)	Jul. 31, 2015	Jul. 31, 2014
Income Tax Disclosure [Abstract]
Net operating loss carryforwards	$ 86,370,251	$ 90,515,261
Other temporary differences	338,000	299,010
Intangible assets	108,022	291,002
Total Deferred Tax Assets	86,816,273	91,105,273
Valuation Allowance	$ (86,816,273)	$ (91,105,273)
Deferred Tax Liabilities
Intangible assets
Other temporary differences
Total Deferred Tax Liabilities
Net Deferred Income Taxes