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STOCK BASED COMPENSATION - Schedule of option activity with Weighted-average exercise price (Details) | 12 Months Ended
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Nov. 30, 2019 $ / shares | Nov. 30, 2019 $ / shares | Nov. 30, 2018 $ / shares | Nov. 30, 2018 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Stock options outstanding at end of year, weighted average exercise price (per share) | (per share) | $ 0.19 | $ 0.14 | $ 0.22 | $ 0.18
Stock options granted during the year, weighted average exercise price (per share) | (per share) | 0.19 | 0.14 | 0.20 | 0.16
Stock options expired during the year, weighted average exercise price (per share) | (per share) | 0.37 | 0.28 |  |
Stock options cancelled during the year, weighted average exercise price (per share) | (per share) | $ 0.22 | $ 0.17 | $ 0.30 | $ 0.23

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- Definition Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired. + References No definition available. + Details
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- Definition Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated. + References No definition available. + Details
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- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. + References No definition available. + Details
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