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Provisions - Additional Information (Details) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of other provisions [table]      
Provision used   € 145 € 55
Provision reversed € 97 164  
Payable, period 5 years    
Provisions for disputes      
Disclosure of other provisions [table]      
Provision used € 54 40  
Provision reversed 0 0  
Provision for charges      
Disclosure of other provisions [table]      
Provision reversed € 0 € 164