Share-Based Compensation - Additional Information (Details) - EUR (€) € in Thousands	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021
Disclosure of terms and conditions of share-based payment arrangement [line items]
Share-based compensation annual expense	€ 148	€ 217

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

No definition available.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration