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Segment information - Non-current assets by geographical area (Details) - EUR (€) € in Thousands | Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023
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Non-current assets by geographical areas |  |  |
Non-current assets other than financial instruments, deferred tax assets | € 192,870 | € 198,306 | € 183,625
United States of America |  |  |
Non-current assets by geographical areas |  |  |
Non-current assets other than financial instruments, deferred tax assets | 11,821 | 13,416 | 12,329
Americas other than USA |  |  |
Non-current assets by geographical areas |  |  |
Non-current assets other than financial instruments, deferred tax assets | 2,774 | 2,687 | 3,023
Belgium |  |  |
Non-current assets by geographical areas |  |  |
Non-current assets other than financial instruments, deferred tax assets | 76,171 | 82,414 | 85,150
Germany |  |  |
Non-current assets by geographical areas |  |  |
Non-current assets other than financial instruments, deferred tax assets | 81,181 | 78,228 | 61,520
Poland |  |  |
Non-current assets by geographical areas |  |  |
Non-current assets other than financial instruments, deferred tax assets | 12,368 | 12,064 | 12,000
Rest of Europe |  |  |
Non-current assets by geographical areas |  |  |
Non-current assets other than financial instruments, deferred tax assets | 7,166 | 7,829 | 8,024
Asia-Pacific |  |  |
Non-current assets by geographical areas |  |  |
Non-current assets other than financial instruments, deferred tax assets | € 1,389 | € 1,668 | € 1,578

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- Definition The amount of non-current assets other than financial instruments, deferred tax assets, post-employment benefit assets and rights arising under insurance contracts. [Refer: Deferred tax assets; Classes of financial instruments [domain]; Non-current assets] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2025-01-01 -Paragraph 33 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2025-en-r&anchor=para_33_b&doctype=Standard -URIDate 2025-03-27 + Details
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Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- References No definition available. + Details
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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