v3.26.1
Property, plant and equipment (Details) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Property, plant and equipment      
Beginning balance € 39,440 € 43,731  
Impairment losses (837) (1,261) € (2,804)
Ending balance 18,430 39,440 43,731
Land      
Property, plant and equipment      
Beginning balance 3,238 4,748  
Ending balance 521 3,238 4,748
Buildings      
Property, plant and equipment      
Beginning balance 7,336 8,169  
Ending balance 527 7,336 8,169
Machinery and equipment      
Property, plant and equipment      
Beginning balance 2,438 2,524  
Ending balance 1,119 2,438 2,524
Leasehold improvements      
Property, plant and equipment      
Beginning balance 23,378 22,393  
Ending balance 14,859 23,378 22,393
Office equipment      
Property, plant and equipment      
Beginning balance 2,693 2,889  
Ending balance 1,245 2,693 2,889
Tangible fixed assets in progress      
Property, plant and equipment      
Beginning balance 250 2,896  
Ending balance 134 250 2,896
Other      
Property, plant and equipment      
Beginning balance 107 112  
Ending balance 25 107 112
Transfer in held for sale      
Property, plant and equipment      
Beginning balance 236,437 252,509  
Additions 1,922 9,531  
Disposals (12,829) (30,884)  
Transfer to held for sale (41,967)    
Net foreign exchange differences (9,850) 5,281  
Ending balance 173,713 236,437 252,509
Transfer in held for sale | Land      
Property, plant and equipment      
Beginning balance 3,238 4,748  
Disposals   (1,544)  
Transfer to held for sale (2,717)    
Net foreign exchange differences   34  
Ending balance 521 3,238 4,748
Transfer in held for sale | Buildings      
Property, plant and equipment      
Beginning balance 29,051 33,582  
Additions 104 785  
Disposals (309) (6,095)  
Transfer to held for sale (24,945)    
Net foreign exchange differences (1,298) 779  
Ending balance 2,603 29,051 33,582
Transfer in held for sale | Machinery and equipment      
Property, plant and equipment      
Beginning balance 58,580 63,040  
Additions 224 424  
Disposals (1,944) (6,482)  
Transfer to held for sale (11,006)    
Transfer from tangible fixed assets in progress 236 449  
Net foreign exchange differences (1,955) 1,149  
Ending balance 44,135 58,580 63,040
Transfer in held for sale | Leasehold improvements      
Property, plant and equipment      
Beginning balance 100,360 100,096  
Additions 396 2,628  
Disposals (8,531) (11,529)  
Transfer to held for sale (186)    
Transfer from tangible fixed assets in progress 735 6,650  
Net foreign exchange differences (4,997) 2,515  
Ending balance 87,777 100,360 100,096
Transfer in held for sale | Office equipment      
Property, plant and equipment      
Beginning balance 42,415 45,613  
Additions 188 729  
Disposals (1,699) (5,156)  
Transfer to held for sale (1,581)    
Transfer from tangible fixed assets in progress 65 468  
Net foreign exchange differences (1,558) 761  
Ending balance 37,830 42,415 45,613
Transfer in held for sale | Tangible fixed assets in progress      
Property, plant and equipment      
Beginning balance 250 2,896  
Additions 947 4,910  
Transfer to held for sale (25)    
Transfer from tangible fixed assets in progress (1,036) (7,567)  
Net foreign exchange differences (2) 11  
Ending balance 134 250 2,896
Transfer in held for sale | Other      
Property, plant and equipment      
Beginning balance 2,543 2,534  
Additions 63 55  
Disposals (346) (78)  
Transfer to held for sale (1,507)    
Net foreign exchange differences (40) 32  
Ending balance 713 2,543 2,534
Depreciation and impairment      
Property, plant and equipment      
Beginning balance (196,997) (208,778)  
Disposals 11,750 27,039  
Transfer to held for sale 32,859    
Net foreign exchange differences 7,784 (4,085)  
Depreciation (9,842) (9,912)  
Impairment losses (837) (1,261)  
Ending balance (155,283) (196,997) (208,778)
Depreciation and impairment | Buildings      
Property, plant and equipment      
Beginning balance (21,715) (25,413)  
Disposals 309 6,052  
Transfer to held for sale 19,644    
Net foreign exchange differences 1,051 (643)  
Depreciation (1,365) (1,211)  
Impairment losses   (500)  
Ending balance (2,076) (21,715) (25,413)
Depreciation and impairment | Machinery and equipment      
Property, plant and equipment      
Beginning balance (56,142) (60,516)  
Disposals 1,927 6,460  
Transfer to held for sale 10,218    
Net foreign exchange differences 1,848 (1,093)  
Depreciation (866) (993)  
Impairment losses (1)    
Ending balance (43,016) (56,142) (60,516)
Depreciation and impairment | Leasehold improvements      
Property, plant and equipment      
Beginning balance (76,982) (77,703)  
Disposals 7,637 9,345  
Transfer to held for sale 119    
Net foreign exchange differences 3,466 (1,779)  
Depreciation (6,583) (6,484)  
Impairment losses (575) (361)  
Ending balance (72,918) (76,982) (77,703)
Depreciation and impairment | Office equipment      
Property, plant and equipment      
Beginning balance (39,722) (42,724)  
Disposals 1,534 5,106  
Transfer to held for sale 1,467    
Net foreign exchange differences 1,379 (539)  
Depreciation (982) (1,165)  
Impairment losses (261) (400)  
Ending balance (36,585) (39,722) (42,724)
Depreciation and impairment | Other      
Property, plant and equipment      
Beginning balance (2,436) (2,422)  
Disposals 343 76  
Transfer to held for sale 1,411    
Net foreign exchange differences 40 (31)  
Depreciation (46) (59)  
Ending balance € (688) € (2,436) € (2,422)