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Related-Party Transactions - Summary of transactions with key management personnel (Details) - Executive and corporate officers - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Related-Party Transactions      
Short-term benefits € 1,897 € 1,517 € 1,669
Post-employment benefits (14) 92 77
Share-based payment 1,077 907 259
Net total € 2,960 € 2,516 € 2,005