Non-current financial assets - Additional Information (Details) - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Disclosure Of Detailed Information About Non-current Financial Assets [Line Items]
Increase (decrease) in financial assets	€ 14	€ (24)
Additions	9	€ 9
Security deposits paid
Disclosure Of Detailed Information About Non-current Financial Assets [Line Items]
Increase (decrease) in financial assets	20
Additions	€ 9

The increase in financial assets resulting from origination or purchase. [Refer: Financial assets]

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration