Net Deferred Tax Assets and Liabilities (Detail) - USD ($) |
May 31, 2016 |
May 31, 2015 |
|---|---|---|
| Schedule Of Income Taxes [Line Items] | ||
| Accrued salary and expenses | $ 378,321 | $ 219,100 |
| Valuation allowance | (378,321) | (219,100) |
| Deferred Tax Assets, Net, Current, Total | 0 | 0 |
| Net operating loss | 23,510,608 | 16,857,600 |
| Debt discount | (902,700) | |
| Expense on non-qualified stock options | 3,873,597 | 3,073,500 |
| Other | 202,812 | 211,700 |
| Valuation allowance | (27,587,017) | (19,240,100) |
| Deferred Tax Assets, Net, Noncurrent, Total | $ 0 | $ 0 |
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- Definition Schedule Of Income Taxes [Line Items] No definition available.
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, netted by jurisdiction and classified as current. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, with jurisdictional netting and classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount, before allocation of valuation allowance, of deferred tax asset attributable to deductible temporary differences, classified as other. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from share-based compensation. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from accrued liabilities. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- 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://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of valuation allowance of deferred tax asset attributable to deductible temporary differences and carryforwards, classified as noncurrent. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition Amount of deferred tax liability attributable to taxable temporary differences from financing arrangements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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