Income Taxes (Narrative) (Details) - USD ($)	3 Months Ended
	Oct. 31, 2016	Oct. 31, 2015
Operating Loss Carryforwards [Line Items]
Reserve for uncertain tax positions	$ 0	$ 0
Federal [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	2,115,000
State [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	8,377,000
International [Member]
Operating Loss Carryforwards [Line Items]
Net operating loss carryforwards	$ 1,918,000
International [Member] | Netherlands [Member]
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards expiration period	9 years
NOL valuation allowance	$ 437,000	531,000
Net deferred tax assets	0	$ 0
International [Member] | India [Member]
Operating Loss Carryforwards [Line Items]
NOL valuation allowance	61,000
Net deferred tax assets	$ 0