Stock based compensation (Details) - $ / shares |
3 Months Ended | ||
|---|---|---|---|
Jun. 04, 2018 |
Nov. 30, 2018 |
Nov. 30, 2017 |
|
| Granted | 1,004,016 | 948,745 | 920,000 |
| Number of shares outstanding, Ending balance | 3,511,296 | ||
| Stock Option [Member] | |||
| Number of shares outstanding, Beginning balance | 1,348,745 | ||
| Exercised | |||
| Granted | 235,000 | 35,000 | |
| Forfeited | (92,916) | ||
| Expired | |||
| Number of shares outstanding, Ending balance | 1,490,829 | ||
| Weighted Average Exercise Price Beginning | $ 3.45 | ||
| Exercised | |||
| Granted | 3.79 | ||
| Forfeited | 3.06 | ||
| Expired | |||
| Weighted Average Exercise Price Ending | $ 3.53 | ||
| X | ||||||||||
- Definition Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition For presentations that combine terminations, the number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan or that expired. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Weighted average price of options that were either forfeited or expired. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Gross number of share options (or share units) granted during the period. No definition available.
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| X | ||||||||||
- Definition Number of options outstanding, including both vested and non-vested options. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition Weighted average price at which option holders acquired shares when converting their stock options into shares. No definition available.
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| X | ||||||||||
- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired. No definition available.
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| X | ||||||||||
- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. No definition available.
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| X | ||||||||||
- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Details
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