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Net Deferred Tax Assets And liabilities (Detail) (USD $)
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May 31, 2014
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May 31, 2013
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| Schedule Of Income Taxes [Line Items] | ||
| Accrued salary and expenses | $ 159,300us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities | $ 291,100us-gaap_DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities |
| Debt discount amortization | (118,100)us-gaap_DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts | |
| Valuation allowance | (159,300)us-gaap_DeferredTaxAssetsValuationAllowanceNoncurrent | (173,000)us-gaap_DeferredTaxAssetsValuationAllowanceNoncurrent |
| Deferred Tax Assets, Net, Current, Total | 0us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent | 0us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent |
| Net operating loss | 9,957,400us-gaap_DeferredTaxAssetsOperatingLossCarryforwards | 8,256,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards |
| Debt discount | (663,700)us-gaap_DeferredTaxLiabilitiesFinancingArrangements | (1,659,300)us-gaap_DeferredTaxLiabilitiesFinancingArrangements |
| Expense on non-qualified stock options | 2,893,300us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost | 2,928,000us-gaap_DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost |
| Other | 176,200us-gaap_DeferredTaxAssetsOther | 155,500us-gaap_DeferredTaxAssetsOther |
| Valuation allowance | (12,363,200)us-gaap_DeferredTaxAssetsValuationAllowance | (9,680,200)us-gaap_DeferredTaxAssetsValuationAllowance |
| Deferred Tax Assets, Net, Noncurrent, Total | $ 0us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent | $ 0us-gaap_DeferredTaxAssetsLiabilitiesNetNoncurrent |
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- Details
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- Definition
Amount after 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 expected to be realized or consumed within one year or operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount after 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 expected to be realized or consumed after one year (or the normal operating cycle, if longer). 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 allowances of deferred tax asset attributable to deductible temporary differences not separately disclosed. 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 deferred tax assets for which it is more likely than not that a tax benefit will not be realized expected to be realized or consumed after one year (or the normal operating cycle, if longer). 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 deferred financing costs. 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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