v3.26.3
schedule of expected contractual maturities (Details) - EUR (€)
€ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Jan. 01, 2024
IfrsStatementLineItems [Line Items]      
Carrying amount € 10,791 € 12,394  
Contractual cash flows 10,848 11,583  
Derivative financial instruments   6,340 € 765
Later than one year and not later than two years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments 483 108  
Later than two year and not later than three years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments 48  
Later than five years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Not later than one year [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments 10,365    
Warrants [member]      
IfrsStatementLineItems [Line Items]      
Carrying amount [1] 177  
Contractual cash flows [1]  
Derivative financial instruments [1]  
Warrants [member] | Later than one year and not later than two years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments [1]  
Warrants [member] | Later than two year and not later than three years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments [1]  
Warrants [member] | Later than five years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments [1]  
Trade payables [member]      
IfrsStatementLineItems [Line Items]      
Carrying amount 1,375 2,838  
Contractual cash flows 1,375 2,838  
Derivative financial instruments 1,375 2,838  
Trade payables [member] | Later than one year and not later than two years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Trade payables [member] | Later than two year and not later than three years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Trade payables [member] | Later than five years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Amounts owed to related parties [member]      
IfrsStatementLineItems [Line Items]      
Carrying amount 5,086  
Contractual cash flows 5,086  
Derivative financial instruments  
Amounts owed to related parties [member] | Later than one year and not later than two years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Amounts owed to related parties [member] | Later than two year and not later than three years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Amounts owed to related parties [member] | Later than five years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Loans and borrowings [member]      
IfrsStatementLineItems [Line Items]      
Carrying amount 1,757 1,938  
Contractual cash flows 1,757 1,938  
Derivative financial instruments 1,757 1,938  
Loans and borrowings [member] | Later than one year and not later than two years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Loans and borrowings [member] | Later than two year and not later than three years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Loans and borrowings [member] | Later than five years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Other payables [member]      
IfrsStatementLineItems [Line Items]      
Carrying amount 7,038 1,000  
Contractual cash flows 7,038 1,000  
Derivative financial instruments 7,038 1,000  
Other payables [member] | Later than one year and not later than two years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Other payables [member] | Later than two year and not later than three years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Other payables [member] | Later than five years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Lease liabilities [member]      
IfrsStatementLineItems [Line Items]      
Carrying amount 440 273  
Contractual cash flows 497 275  
Derivative financial instruments 195 119  
Lease liabilities [member] | Later than one year and not later than two years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments 302 108  
Lease liabilities [member] | Later than two year and not later than three years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments 48  
Lease liabilities [member] | Later than five years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments  
Convertible instruments [member]      
IfrsStatementLineItems [Line Items]      
Carrying amount [1] 181 636  
Contractual cash flows [1] 181  
Derivative financial instruments [1]  
Convertible instruments [member] | Later than one year and not later than two years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments [1] 181  
Convertible instruments [member] | Later than two year and not later than three years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments [1]  
Convertible instruments [member] | Later than five years [member]      
IfrsStatementLineItems [Line Items]      
Derivative financial instruments [1]  
[1] contractual cash flows for warrants and convertible promissory notes are €nil because both instruments will be settled in shares.