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Other Financial Assets - Additional Information (Details) - EUR (€)
€ in Thousands
1 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of financial assets [line items]        
Total amount of financial assets € 4,431 € 4,431 € 1,458 € 1,727
Liquidity account, cash balance 513 € 513 € 688 € 1,023
Number of shares recorded as deduction from equity (in shares)   137,012 88,929 18,132
Genoscience Pharma        
Disclosure of financial assets [line items]        
Subscription of new ordinary shares € 3,000