Activity Related to Notes (Detail) - USD ($) |
12 Months Ended | |
|---|---|---|
May 31, 2016 |
May 31, 2015 |
|
| 2013 Convertible Notes | ||
| Debt Instrument [Line Items] | ||
| Face amount of Notes | $ 50,000 | $ 4,271,250 |
| Unamortized discount | (6,529) | |
| Conversions | (50,000) | (4,221,250) |
| Total carrying value of Notes | 43,471 | |
| Short-Term Convertible Notes | ||
| Debt Instrument [Line Items] | ||
| Face amount of Notes | 3,981,050 | 3,981,050 |
| Unamortized discount | (2,390,063) | |
| Conversions | (525,000) | |
| Payments upon maturity | (762,250) | |
| Total carrying value of Notes | $ 1,590,987 | |
| Short-Term Convertible Notes | Tender Offer | ||
| Debt Instrument [Line Items] | ||
| Conversions | $ (2,693,800) | |
| X | ||||||||||
- 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
|
| X | ||||||||||
- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Amount, after accumulated amortization, of debt discount. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. 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
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|