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Financial liabilities - Change in derivative instruments (Details) - EUR (€) € in Thousands |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
May 24, 2023 | Dec. 31, 2024 | Dec. 31, 2022 | Dec. 31, 2023 | Aug. 24, 2023 | Aug. 20, 2023
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Exercises of share warrants | € 1,850 | € 45 | € 3 |  |  |
Financial liabilities, at fair value |  | € 162,256 | € 58,469 | € 125,191 |  |
Kreos A & B BSA |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Exercises of share warrants | € 1,850 |  |  |  |  |
Financial liabilities, at fair value |  |  |  |  |  | € 23,995
Oceane |  |  |  |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |  |  |  |
Financial liabilities, at fair value |  |  |  |  | € 1,762 |

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- Definition The increase (decrease) in equity resulting from the exercise of warrants. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 106 -Subparagraph d -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_106_d&doctype=Standard -URIDate 2024-03-27 + Details
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