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]

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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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
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-IssueDate 2024-01-01
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- Definition

The amount of short-term deposits held by the entity that are not classified as cash equivalents. [Refer: Cash equivalents]

+ References

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

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No definition available.

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The amount paid on licensing arrangements.

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Accounting principles - Going concern (Details) € in Thousands, $ in Millions	Jul. 07, 2025 EUR (€) $ / €	Jul. 07, 2025 USD ($) $ / €	Jun. 30, 2025 EUR (€) $ / €	May 09, 2025 $ / €	May 07, 2025 $ / €	Dec. 31, 2024 EUR (€) $ / €	Jun. 30, 2024 EUR (€) $ / €	Dec. 31, 2023 EUR (€)
Going Concern
Cash and cash equivalents \| €			€ 122,076			€ 96,564	€ 10,147	€ 26,918
Short-term deposits \| €			€ 24,578
Exchange rate at the end of period			1.172			1.0389	1.0705
Licensing and collaboration agreement with CTTQ
Going Concern
Exchange rate at the end of period			1.125	1.125	1.172
Receipt of payments under Licensing arrangements \| Licensing and collaboration agreement with CTTQ
Going Concern
Amount received on licensing arrangements	€ 8,500	$ 9.5
Exchange rate at the end of period	1.173	1.173	1.172