Income Taxes (Schedule of Defered Income Tax Assets and Liabilities) (Details) - USD ($) |
Apr. 30, 2018 |
Apr. 30, 2017 |
Apr. 30, 2016 |
|---|---|---|---|
| Deferred tax assets: | |||
| Net operating loss | $ 7,163,547 | $ 8,626,748 | |
| Allowance for doubtful accounts (recovery) | 105,122 | (20,029) | |
| Intangible assets | (6,573) | 201,942 | |
| Deferred rent | 20,574 | 16,911 | |
| Stock-based compensation | 687,067 | 820,257 | |
| Contributions carryforward | 60 | 93 | |
| Total deferred tax assets | 7,969,797 | 9,645,922 | |
| Deferred tax liabilities: | |||
| Property and equipment | (132,042) | (174,260) | |
| Total deferred tax liabilities | (132,042) | (174,260) | |
| Deferred tax assets, net | 7,837,755 | 9,471,662 | |
| Valuation allowance: | |||
| Valuation allowance | (7,837,755) | (9,471,662) | $ (9,068,774) |
| Net deferred tax asset |
| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences. No definition available.
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from the allowance for doubtful accounts. No definition available.
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- Definition Amount of deferred tax liability attributable to taxable temporary differences. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible charitable contribution carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from intangible assets including goodwill. No definition available.
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred rent. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- References No definition available.
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