Related party transactions (Details) - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Related party transactions
Sales of goods and services	€ 1,820	€ 3,664	€ 16,661
Receivables from related parties	361	€ 208	€ 2,164
Bad or doubtful debt expenses	€ (166)

The amounts receivable resulting from related party transactions. [Refer: Total for all related parties [member]]

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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Balance Type:	debit
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