Cash and cash equivalents (Details) - EUR (€) € in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash and cash equivalents
Other cash equivalents	€ 17,933	€ 16,798	€ 42,900
Cash at bank and at hand	8,985	69,939	43,653
Cash and cash equivalents	€ 26,918	€ 86,736	€ 86,553	€ 105,687

The amount of cash on hand and demand deposits. [Refer: Cash on hand]

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- Definition

The amount of cash on hand and demand deposits, along with short-term, highly liquid investments that are readily convertible to known amounts of cash and that are subject to an insignificant risk of changes in value. [Refer: Cash; Cash equivalents]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- References

No definition available.

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- Definition

A classification of cash equivalents representing short-term deposits. [Refer: Cash equivalents]

+ References

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