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Share-based payments - Share options (Details) |  |  |  |  |  |  |  | 12 Months Ended
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Nov. 16, 2023 Options | Sep. 08, 2023 Options | Jun. 12, 2023 Options | Mar. 22, 2023 Options | Dec. 20, 2022 Options | Aug. 15, 2022 Options | May 20, 2020 Options | Dec. 31, 2023 Options EquityInstruments shares | Dec. 31, 2022 Options EquityInstruments
Share-based payments |  |  |  |  |  |  |  |  |
Number of share options issued | 14,300 | 7,650 | 23,450 | 13,900 | 4,000 | 25,200 |  | 59,300 | 29,200
Number of each option granted to purchase common shares | shares |  |  |  |  |  |  |  | 1 |
Share Option Plan |  |  |  |  |  |  |  |  |
Share-based payments |  |  |  |  |  |  |  |  |
Number of share options issued |  |  |  |  |  |  | 2,778,173 |  |
Number of trading shares preceding the date the share option granted | EquityInstruments |  |  |  |  |  |  |  | 1,474,809 | 1,511,773
Number of trading days preceding the date the share option granted |  |  |  |  |  |  |  | 5 days |
Maximum term of share options granted |  |  |  |  |  |  |  | 10 years |
Maximum period of share options vested |  |  |  |  |  |  |  | 4 years |

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- Definition The number of other equity instruments (ie other than share options) outstanding in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition The number of share options granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2023-01-01 -Paragraph 45 -Subparagraph b -Clause ii -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2023-en-r&anchor=para_45_b_ii&doctype=Standard -URIDate 2023-03-23 + Details
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- Definition Represents maximum period of options vested for a type of share-based payment arrangement. + References No definition available. + Details
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- Definition Number of trading days preceding the date the share option granted. + References No definition available. + Details
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