v3.26.3
Schedule of intangible assets (Details) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Jan. 01, 2024
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance € 23,958    
Intangible assets, ending balance 19,296 € 23,958  
Net book value 19,296 23,958 € 5,076
Customer-related intangible assets [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance 19,429    
Intangible assets, ending balance 15,648 19,429  
Net book value 15,648 19,429  
Brand names [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance 4,529    
Intangible assets, ending balance 3,648 4,529  
Net book value 3,648 4,529  
Technology-based intangible assets [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance    
Intangible assets, ending balance  
Net book value  
Intangible assets under development [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance    
Intangible assets, ending balance  
Net book value  
Copyrights, patents and other industrial property rights, service and operating rights [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance    
Intangible assets, ending balance  
Net book value  
Computer software [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance    
Intangible assets, ending balance  
Net book value  
Gross carrying amount [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance 24,364 6,443  
Additions 24,543  
Exchange differences (2,520)    
Reclassification   (0)  
Disposal   (42)  
Deconsolidation of entities   (6,580)  
Intangible assets, ending balance 21,844 24,364  
Net book value 21,844 24,364  
Gross carrying amount [member] | Customer-related intangible assets [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance 19,758  
Additions 19,758  
Exchange differences (2,044)    
Intangible assets, ending balance 17,714 19,758  
Net book value 17,714 19,758  
Gross carrying amount [member] | Brand names [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance 4,606  
Additions 4,606  
Exchange differences (476)    
Intangible assets, ending balance 4,130 4,606  
Net book value 4,130 4,606  
Gross carrying amount [member] | Technology-based intangible assets [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance 2,996  
Additions    
Exchange differences    
Reclassification   686  
Disposal    
Deconsolidation of entities   (3,682)  
Intangible assets, ending balance  
Net book value  
Gross carrying amount [member] | Intangible assets under development [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance 1,346  
Additions 142  
Exchange differences    
Reclassification   (686)  
Disposal    
Deconsolidation of entities   (803)  
Intangible assets, ending balance  
Net book value  
Gross carrying amount [member] | Copyrights, patents and other industrial property rights, service and operating rights [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance 1,911  
Additions  
Exchange differences    
Reclassification    
Disposal    
Deconsolidation of entities   (1,911)  
Intangible assets, ending balance  
Net book value  
Gross carrying amount [member] | Computer software [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance 190  
Additions 37  
Exchange differences    
Reclassification    
Disposal   (42)  
Deconsolidation of entities   (185)  
Intangible assets, ending balance  
Net book value  
Accumulated depreciation and amortisation [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance (406) (1,367)  
Exchange differences 123    
Deconsolidation of entities   2,344  
Amortisation charge (2,265) (1,383)  
Intangible assets, ending balance (2,548) (406)  
Net book value (2,548) (406)  
Accumulated depreciation and amortisation [member] | Customer-related intangible assets [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance (329)  
Exchange differences 100    
Amortisation charge (1,837) (329)  
Intangible assets, ending balance (2,066) (329)  
Net book value (2,066) (329)  
Accumulated depreciation and amortisation [member] | Brand names [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance (77)  
Exchange differences 23    
Amortisation charge (428) (77)  
Intangible assets, ending balance (482) (77)  
Net book value (482) (77)  
Accumulated depreciation and amortisation [member] | Technology-based intangible assets [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance (1,320)  
Exchange differences    
Deconsolidation of entities   2,279  
Amortisation charge (959)  
Intangible assets, ending balance  
Net book value  
Accumulated depreciation and amortisation [member] | Intangible assets under development [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance  
Exchange differences    
Deconsolidation of entities    
Amortisation charge  
Intangible assets, ending balance  
Net book value  
Accumulated depreciation and amortisation [member] | Copyrights, patents and other industrial property rights, service and operating rights [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance (4)  
Exchange differences    
Deconsolidation of entities   5  
Amortisation charge (1)  
Intangible assets, ending balance  
Net book value  
Accumulated depreciation and amortisation [member] | Computer software [member]      
IfrsStatementLineItems [Line Items]      
Intangible assets, beginning balance (43)  
Exchange differences    
Deconsolidation of entities   61  
Amortisation charge (18)  
Intangible assets, ending balance  
Net book value