Income Taxes - Schedule of Deferred Tax Assets (Details) - USD ($) $ in Thousands	Jul. 31, 2018	Jul. 31, 2017
Income Tax Disclosure [Abstract]
Federal and State net operating loss	$ 4,146	$ 5,988
Foreign net operating loss	18	18
Stock-based compensation and other	116	173
Deferred tax assets gross, total	4,281	6,179
Less: Valuation allowance	(4,281)	(6,179)
Net deferred tax asset

Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible foreign operating loss carryforwards.

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Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other.

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