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Activity Related to Notes (Detail) (USD $)
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9 Months Ended | 12 Months Ended | ||
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Feb. 28, 2015
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Feb. 28, 2014
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May 31, 2014
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May 31, 2013
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| Debt Instrument [Line Items] | ||||
| Face amount of Notes | $ 4,271,250us-gaap_DebtInstrumentCarryingAmount | $ 7,221,250us-gaap_DebtInstrumentCarryingAmount | $ 6,588,250us-gaap_DebtInstrumentCarryingAmount | |
| Unamortized discount | (633,741)us-gaap_DebtInstrumentUnamortizedDiscount | (1,932,566)us-gaap_DebtInstrumentUnamortizedDiscount | (4,539,886)us-gaap_DebtInstrumentUnamortizedDiscount | |
| Repayments | (250,000)us-gaap_RepaymentsOfConvertibleDebt | (500,000)us-gaap_RepaymentsOfConvertibleDebt | ||
| Conversions | (1,175,000)us-gaap_DebtConversionConvertedInstrumentAmount1 | (2,459,000)us-gaap_DebtConversionConvertedInstrumentAmount1 | (2,450,000)us-gaap_DebtConversionConvertedInstrumentAmount1 | (567,000)us-gaap_DebtConversionConvertedInstrumentAmount1 |
| Total carrying value of Notes | 2,462,509us-gaap_LongTermDebt | 2,338,684us-gaap_LongTermDebt | 1,481,364us-gaap_LongTermDebt | |
| Short-term portion of Notes | (2,462,509)us-gaap_ConvertibleNotesPayableCurrent | (328,347)us-gaap_ConvertibleNotesPayableCurrent | ||
| Long-term portion of Notes | 2,338,684us-gaap_ConvertibleLongTermNotesPayable | 1,153,017us-gaap_ConvertibleLongTermNotesPayable | ||
| Total carrying value of Notes | $ 2,462,509us-gaap_LongTermDebt | $ 2,338,684us-gaap_LongTermDebt | $ 1,481,364us-gaap_LongTermDebt | |
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- Definition
Carrying value as of the balance sheet date of long-term debt (with maturities initially due after one year or beyond the operating cycle if longer) identified as Convertible Notes Payable, excluding current portion. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying value as of the balance sheet date of the portion of long-term debt due within one year or the operating cycle if longer identified as Convertible Notes Payable. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The value of the financial instrument(s) that the original debt is being converted into in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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- Definition
The amount of debt discount that was originally recognized at the issuance of the instrument that has yet to be amortized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The cash outflow from the repayment of a long-term debt instrument which can be exchanged for a specified amount of another security, typically the entity's common stock, at the option of the issuer or the holder. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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