Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Related Party Disclosures - Summary of Loan From/To Related Parties (Details)

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Related Party Disclosures - Summary of Loan From/To Related Parties (Details) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Swissfillon AG      
Disclosure Of Transactions Between Related Parties [Line Items]      
Interest received     € 10
SE Holdings Co.Ltd.      
Disclosure Of Transactions Between Related Parties [Line Items]      
Interest paid € 3 € 5 5
Financial liabilities   (871)  
Directors and Key Managers      
Disclosure Of Transactions Between Related Parties [Line Items]      
Interest received   € 2 € 22