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Summary of Significant Accounting Policies - Additional Information (Details) - EUR (€)
€ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Disclosure of voluntary change in accounting policy [line items]      
Impairment loss € 157   € 196
Leased equipment      
Disclosure of voluntary change in accounting policy [line items]      
Impairment loss € 22 € 62