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Share capital - Stock options plans and changes (Details) | 12 Months Ended
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Nov. 30, 2021 $ / shares shares | Nov. 30, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Balance - end of period, number of options | shares | 10,539,324 | 10,539,324
Balance - end of period, weighted average exercise price | $ / shares | $ 1.99 |
Stock option |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Balance - beginning of the year, number of options | shares | 8,647,500 | 8,647,500
Balance - beginning of the year, weighted average exercise price | $ / shares |  | $ 1.87
Number of options, Granted | shares | 3,374,150 | 3,374,150
Weighted average exercise price, Granted | $ / shares |  | $ 1.97
Number of options, Exercised | shares | (1,330,326) | (1,330,326)
Weighted average exercise price, Exercised | $ / shares |  | $ 1.14
Number of options, Cancelled | shares | (140,666) | (140,666)
Weighted average exercise price, Cancelled | $ / shares |  | $ 2.38
Balance - end of period, number of options | shares | 10,539,324 | 10,539,324
Balance - end of period, weighted average exercise price | $ / shares |  | $ 1.99

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- Definition Net number of share options (or share units) granted during the period. + 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)(iv)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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- Definition Number of options outstanding, including both vested and non-vested options. + 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 -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: 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)-(ii) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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=120381028&loc=d3e5070-113901 + Details
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