Related-party transactions - Schedule of key management compensation (Details) - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Related party transactions [abstract]
Salaries and other short-term employee benefits	€ 2,821	€ 1,930	€ 2,950
Other long-term benefits	45	24	18
Share-based payments (expense of the year)	722	856	1,786
KEY MANAGEMENT COMPENSATION	€ 3,588	2,809	€ 4,755
Leaving indemnities		€ 900

The amount of compensation to key management personnel. [Refer: Key management personnel of entity or parent [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Number 24
-IssueDate 2022-03-24
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- Definition

The amount of compensation to key management personnel in the form of other long-term employee benefits. [Refer: Other long-term employee benefits; Key management personnel of entity or parent [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Number 24
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- Definition

The amount of compensation to key management personnel in the form of share-based payments. [Refer: Key management personnel of entity or parent [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The amount of compensation to key management personnel in the form of short-term employee benefits. [Refer: Key management personnel of entity or parent [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
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- References

No definition available.

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- Definition

Leaving indemnities included in salaries and other short-term employee benefits.

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No definition available.

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