Operating income - Disclosure of breakdown of operating income (Details) - EUR (€) € in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Revenue [abstract]
Research tax credit ("CIR")	€ 970	€ 1,150
Subsidies	0	25
Other	24	12
Total operating income	€ 994	€ 1,186

Income From Research Tax Credit

No definition available.

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- Definition

The amount of miscellaneous other operating income. [Refer: Other operating income (expense)]

+ References

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+ Details

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- Definition

The amount of operating income that the entity does not separately disclose in the same statement or note.

+ References

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

No definition available.

+ Details

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- Definition

The amount of income recognised in relation to government grants. [Refer: Government grants]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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