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Income taxes - Additional Information (Details) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
Uncertain tax items |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Provisions | € 2,800 | € 6,600 |
Parent Company |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Applicable Italian regional income tax rate | 5.57% | 5.57% | 5.57%
Other |  |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |  |
Applicable Italian regional income tax rate | 3.90% | 3.90% | 3.90%

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- Definition The amount of liabilities of uncertain timing or amount, including provisions for employee benefits. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Expiry date 2027-01-01 -Name IAS -Number 1 -IssueDate 2025-01-01 -Paragraph 54 -Subparagraph l -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_54_l&doctype=Standard -URIDate 2025-03-27 + Details
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