Activity Related to Notes (Detail) - USD ($) |
3 Months Ended | 12 Months Ended | |
|---|---|---|---|
Jan. 31, 2018 |
Aug. 31, 2018 |
May 31, 2018 |
|
| Debt Instrument [Line Items] | |||
| Face amount of Note | $ 5,700,000 | ||
| Unamortized discount | (626,242) | ||
| Carrying value of Note | 5,073,758 | ||
| Short-Term Debt | |||
| Debt Instrument [Line Items] | |||
| Face amount of Note | 2,100,000 | ||
| Monthly redemption | 700,000 | ||
| Unamortized discount | (344,614) | ||
| Carrying value of Note | 2,455,386 | ||
| Long-Term Debt | |||
| Debt Instrument [Line Items] | |||
| Face amount of Note | 3,600,000 | ||
| Monthly redemption | (700,000) | ||
| Unamortized discount | (281,628) | ||
| Carrying value of Note | $ 2,618,372 | ||
| Short-Term Convertible Notes | |||
| Debt Instrument [Line Items] | |||
| Face amount of Note | $ 6,300,000 | $ 6,038,500 | |
| Registered direct equity offering | (5,788,500) | ||
| Note repayment | $ (259,000) | $ (250,000) |
| X | ||||||||||
- Definition Debt Instrument, Periodic Addition Payment No definition available.
|
| X | ||||||||||
- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of a written promise to pay a note, initially due after one year or beyond the operating cycle if longer, which can be exchanged for a specified amount of one or more securities (typically common stock), at the option of the issuer or the holder. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| 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/disclosureRef
|
| 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://fasb.org/us-gaap/role/ref/legacyRef
|
| 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/disclosureRef
|
| X | ||||||||||
- Definition The cash outflow for a borrowing supported by a written promise to pay an obligation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|