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Share-based payments - Disclosure of reconciliation of BSAs (Details) - shares |  |  |  |  |  |  | 1 Months Ended | 12 Months Ended | 110 Months Ended
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Apr. 22, 2025 | Jan. 13, 2025 | Apr. 04, 2024 | Jan. 22, 2018 | Sep. 18, 2017 | Dec. 04, 2015 | Apr. 30, 2025 | Jan. 31, 2025 | Mar. 31, 2024 | Dec. 31, 2025 | Dec. 31, 2025
Total BSAs |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |
Number of instruments outstanding, beginning balance (in shares) |  |  |  |  |  |  |  | 223,944 |  | 223,944 |
Number of instruments issued (in shares) |  |  |  |  |  |  | 39,370 | 125,000 |  | 164,370 | 486,714
Number of instruments lapsed (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments exercised (in shares) |  |  |  |  |  |  |  |  |  | (134,587) |
Number of instruments outstanding, ending balance (in shares) |  |  |  |  |  |  |  |  |  | 253,727 | 253,727
Number of instruments exercisable (in shares) |  |  |  |  |  |  |  |  |  | 30,989 | 30,989
Maximum number of shares to be issued if all conditions are met (in shares) |  |  |  |  |  |  |  |  |  | 253,727 | 253,727
BSA-2015-11 |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |
Number of instruments outstanding, beginning balance (in shares) |  |  |  |  |  |  |  | 96,924 |  | 96,924 |
Number of instruments issued (in shares) |  |  |  |  |  | 96,924 |  |  |  | 0 |
Number of instruments lapsed (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments exercised (in shares) |  |  |  |  |  |  |  |  |  | (96,924) |
Number of instruments outstanding, ending balance (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0
Number of instruments exercisable (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0
Maximum number of shares to be issued if all conditions are met (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0
BSA-2015-12 |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |
Number of instruments outstanding, beginning balance (in shares) |  |  |  |  |  |  |  | 16,400 |  | 16,400 |
Number of instruments issued (in shares) |  |  |  |  |  | 82,000 |  |  |  | 0 |
Number of instruments lapsed (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments exercised (in shares) |  |  |  |  |  |  |  |  |  | (16,400) |
Number of instruments outstanding, ending balance (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0
Number of instruments exercisable (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0
Maximum number of shares to be issued if all conditions are met (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0
BSA-2017-1 |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |
Number of instruments outstanding, beginning balance (in shares) |  |  |  |  |  |  |  | 16,400 |  | 16,400 |
Number of instruments issued (in shares) |  |  |  |  | 16,400 |  |  |  |  | 0 |
Number of instruments lapsed (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments exercised (in shares) |  |  |  |  |  |  |  |  |  | (16,400) |
Number of instruments outstanding, ending balance (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0
Number of instruments exercisable (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0
Maximum number of shares to be issued if all conditions are met (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0
BSA-2018-1 |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |
Number of instruments outstanding, beginning balance (in shares) |  |  |  |  |  |  |  | 16,400 |  | 16,400 |
Number of instruments issued (in shares) |  |  |  | 49,200 |  |  |  |  |  | 0 |
Number of instruments lapsed (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments exercised (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments outstanding, ending balance (in shares) |  |  |  |  |  |  |  |  |  | 16,400 | 16,400
Number of instruments exercisable (in shares) |  |  |  |  |  |  |  |  |  | 16,400 | 16,400
Maximum number of shares to be issued if all conditions are met (in shares) |  |  |  |  |  |  |  |  |  | 16,400 | 16,400
BSA-2024-1 |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |
Number of instruments outstanding, beginning balance (in shares) |  |  |  |  |  |  |  | 58,365 |  | 58,365 |
Number of instruments issued (in shares) |  |  | 58,365 |  |  |  |  |  | 77,820 | 0 |
Number of instruments lapsed (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments exercised (in shares) |  |  |  |  |  |  |  |  |  | (4,863) |
Number of instruments outstanding, ending balance (in shares) |  |  |  |  |  |  |  |  |  | 53,502 | 53,502
Number of instruments exercisable (in shares) |  |  |  |  |  |  |  |  |  | 9,726 | 9,726
Maximum number of shares to be issued if all conditions are met (in shares) |  |  |  |  |  |  |  |  |  | 53,502 | 53,502
BSA-2024-2 |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |
Number of instruments outstanding, beginning balance (in shares) |  |  |  |  |  |  |  | 19,455 |  | 19,455 |
Number of instruments issued (in shares) |  |  | 19,455 |  |  |  |  |  |  | 0 |
Number of instruments lapsed (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments exercised (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments outstanding, ending balance (in shares) |  |  |  |  |  |  |  |  |  | 19,455 | 19,455
Number of instruments exercisable (in shares) |  |  |  |  |  |  |  |  |  | 4,863 | 4,863
Maximum number of shares to be issued if all conditions are met (in shares) |  |  |  |  |  |  |  |  |  | 19,455 | 19,455
BSA-2025-1 |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |
Number of instruments outstanding, beginning balance (in shares) |  |  |  |  |  |  |  | 0 |  | 0 |
Number of instruments issued (in shares) |  | 100,000 |  |  |  |  |  |  |  | 100,000 |
Number of instruments lapsed (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments exercised (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments outstanding, ending balance (in shares) |  |  |  |  |  |  |  |  |  | 100,000 | 100,000
Number of instruments exercisable (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0
Maximum number of shares to be issued if all conditions are met (in shares) |  |  |  |  |  |  |  |  |  | 100,000 | 100,000
BSA-2025-2 |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |
Number of instruments outstanding, beginning balance (in shares) |  |  |  |  |  |  |  | 0 |  | 0 |
Number of instruments issued (in shares) |  | 25,000 |  |  |  |  |  |  |  | 25,000 |
Number of instruments lapsed (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments exercised (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments outstanding, ending balance (in shares) |  |  |  |  |  |  |  |  |  | 25,000 | 25,000
Number of instruments exercisable (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0
Maximum number of shares to be issued if all conditions are met (in shares) |  |  |  |  |  |  |  |  |  | 25,000 | 25,000
BSA-2025-3 |  |  |  |  |  |  |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |  |  |  |  |  |  |
Number of instruments outstanding, beginning balance (in shares) |  |  |  |  |  |  |  | 0 |  | 0 |
Number of instruments issued (in shares) | 39,370 |  |  |  |  |  | 39,370 |  |  | 39,370 |
Number of instruments lapsed (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments exercised (in shares) |  |  |  |  |  |  |  |  |  | 0 |
Number of instruments outstanding, ending balance (in shares) |  |  |  |  |  |  |  |  |  | 39,370 | 39,370
Number of instruments exercisable (in shares) |  |  |  |  |  |  |  |  |  | 0 | 0
Maximum number of shares to be issued if all conditions are met (in shares) |  |  |  |  |  |  |  |  |  | 39,370 | 39,370

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- Definition The number of other equity instruments (ie other than share options) granted in a share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 45 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_45&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 2 -IssueDate 2025-01-01 -Paragraph 47 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=2&code=ifrs-tx-2025-en-r&anchor=para_47_b&doctype=Standard -URIDate 2025-03-27 + Details
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