Income taxes (Details) - EUR (€) € in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
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| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
| Net deferred tax liabilities | € 6,076 | € 5,848 |
| Royalty certificates | ||
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
| Deferred tax liabilities | 17,383 | |
| Royalty certificates | France | ||
| Disclosure of temporary difference, unused tax losses and unused tax credits [line items] | ||
| Deferred tax assets | € 11,307 |
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- Definition The amounts of income taxes recoverable in future periods in respect of: (a) deductible temporary differences; (b) the carryforward of unused tax losses; and (c) the carryforward of unused tax credits. [Refer: Temporary differences [member]; Unused tax credits [member]; Unused tax losses [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The amounts of income taxes payable in future periods in respect of taxable temporary differences. [Refer: Temporary differences [member]] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. No definition available.
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- Definition The amount of deferred tax liabilities net of deferred tax assets, when the absolute amount of deferred tax liabilities is greater than the absolute amount of deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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