Note 8 - Derivative Liability (Details) - Fair Value Measurements, Recurring, Valuation Techniques - $ / shares |
12 Months Ended | ||
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Aug. 31, 2018 |
Aug. 31, 2017 |
Dec. 31, 2018 |
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| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | |||
| Expected dividends: | 0.00% | 0.00% | |
| Stock price (in Dollars per share) | $ 11.18 | ||
| Minimum [Member] | |||
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | |||
| Expected volatility: | 121.10% | 37.80% | |
| Expected term (years): | 76 days | 14 days | |
| Risk free interest rate: | 0.97% | 0.26% | |
| Stock price (in Dollars per share) | $ 0.35 | $ 0.51 | 6.76 |
| Maximum [Member] | |||
| Fair Value Measurement Inputs and Valuation Techniques [Line Items] | |||
| Expected volatility: | 246.80% | 276.90% | |
| Expected term (years): | 1 year | 6 months | |
| Risk free interest rate: | 2.08% | 0.98% | |
| Stock price (in Dollars per share) | $ 1.11 | $ 1.97 | $ 11.18 |
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- 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.
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Price of a single share of a number of saleable stocks of a company. No definition available.
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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