Income Taxes (Tables)

12 Months Ended

Jul. 31, 2012

Income Tax Disclosure [Abstract]

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

Deferred income taxes consist of the following:

	July 31,
	2012			2011
Net operating loss carryforwards	$	85,428,939		$	85,026,388
Other temporary differences		627,656			5,680
Total Deferred Tax Assets		86,056,595			85,032,068
Valuation Allowance		(85,579,584	)		(84,336,137	)
Deferred Tax Liabilities
Intangible assets		(378,672	)		(623,708	)
Other temporary differences		(98,339	)		(72,223	)
Total Deferred Tax Liabilities		(477,011	)		(695,931	)
Net Deferred Income Taxes	$	—		$	—

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

A reconciliation of the United States Federal Statutory rate to the Company’s effective tax rate for the years ended July 31, 2012, 2011 and 2010 is as follows:

	2012			2011			2010
Federal statutory rate		(34.0	)%		(34.0	)%		(34.0	)%
Increase (decrease) in income taxes resulting from:
Imputed interest income on intercompany receivables from foreign subsidiaries		5.0			3.0			2.0
Non-deductible or non-taxable items		4.0			(4.0	)		(6.0	)
Change in Canadian NOL carryforwards due to future tax rate changes		0.0			20.0			—
Other temporary differences		13.0			18.0			3.0
Change in valuation allowance		12.0			(3.0	)		35.0
Effective tax rate		—	%		—	%		—	%