NON-CURRENT AND CURRENT FINANCIAL LIABILITIES - Black forest term loan facility (Details) - 12 months ended Dec. 31, 2025 € in Thousands	EUR (€) shares tranche	EUR (€) $ / shares	$ / shares
Black forest term loan facility
FINANCIAL LIABILITIES AND WARRANTS
Derivative amount	€ 1,746	€ 1,746
Black forest term loan facility \| Maximum
FINANCIAL LIABILITIES AND WARRANTS
Loan facilities	€ 10	10
Black forest term loan facility, first tranche
FINANCIAL LIABILITIES AND WARRANTS
Number of debt facilities \| tranche	2
Loan facilities	€ 2,500	2,500
Amount of debt payable	€ 574	€ 574
Conversion share price \| $ / shares			$ 2.15
Conversion eligibility start period (n months)	6 months
Debt term	15 months
Effective interest rate	15.00%	15.00%
Number of options granted \| shares	1,250,000
Exercise price of options granted \| $ / shares		€ 4.1956
Weighted average share price \| $ / shares		€ 4.31
Maturity period (in years)	5 years
Derivative amount	€ 5,300	€ 5,300
Day 1 loss	€ 3,500

The amount of outstanding funds that the entity is obligated to repay.

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The interest rate on borrowings. [Refer: Borrowings]

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The amount of financial liabilities classified as derivative instruments. [Refer: Financial assets; Derivatives [member]]

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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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The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

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The number of share options granted in a share-based payment arrangement.

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The weighted average exercise price of share options granted in a share-based payment arrangement. [Refer: Weighted average [member]]

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The weighted average share price used as input to the option pricing model to calculate the fair value of share options granted. [Refer: Option pricing model [member]; Weighted average [member]]

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The minimum period following the first tranche drawdown during which the lender cannot exercise the conversion option, after which the conversion right becomes exercisable.

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The price per share of the conversion feature embedded in the debt instrument.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The amount of gain (loss) on share-based payment arrangement.

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Represents the number of debt facilities.

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