v3.25.4
Property, Plant and Equipment - Summary of Property, Plant and Equipment (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period € 98,714    
Depreciation charge (17,206) € (17,247) € (18,428)
Property, plant and equipment at ending period 146,479 98,714  
Gross carrying amount [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period 183,361 182,151  
Additions 87,024 2,187  
Disposals   (7,719)  
Transferred (36,395)    
Foreign exchange translation (11,089) 6,742  
Property, plant and equipment at ending period 222,901 183,361 182,151
Depreciation and impairment [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period (84,647) (71,517)  
Depreciation charge (17,206) (17,247)  
Impairment charge (7,508)    
Impairment reversal 2,225    
Disposals   6,885  
Transferred 25,724    
Foreign exchange translation 4,990 (2,768)  
Property, plant and equipment at ending period (76,422) (84,647) (71,517)
Plant and machinery [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period 12,003    
Property, plant and equipment at ending period 11,037 12,003  
Plant and machinery [member] | Gross carrying amount [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period 21,933 27,436  
Additions 996 299  
Disposals   (5,995)  
Transferred (162) 66  
Foreign exchange translation (2) 127  
Property, plant and equipment at ending period 22,765 21,933 27,436
Plant and machinery [member] | Depreciation and impairment [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period (9,930) (12,784)  
Depreciation charge (2,325) (2,330)  
Impairment reversal 16    
Disposals   5,296  
Transferred 529    
Foreign exchange translation (18) (112)  
Property, plant and equipment at ending period (11,728) (9,930) (12,784)
Other equipment [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period 3,786    
Property, plant and equipment at ending period 7,465 3,786  
Other equipment [member] | Gross carrying amount [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period 10,976 11,420  
Additions 5,704 951  
Disposals   (1,635)  
Transferred (1,311) (66)  
Foreign exchange translation (517) 306  
Property, plant and equipment at ending period 14,852 10,976 11,420
Other equipment [member] | Depreciation and impairment [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period (7,190) (7,175)  
Depreciation charge (1,301) (1,322)  
Impairment charge (196)    
Impairment reversal 201    
Disposals   1,501  
Transferred 731    
Foreign exchange translation 368 (194)  
Property, plant and equipment at ending period (7,387) (7,190) (7,175)
Leasehold improvements [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period 7,513    
Property, plant and equipment at ending period 6,882 7,513  
Leasehold improvements [member] | Gross carrying amount [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period 20,298 19,375  
Additions 1,678 76  
Transferred (13,658)    
Foreign exchange translation (1,271) 847  
Property, plant and equipment at ending period 7,047 20,298 19,375
Leasehold improvements [member] | Depreciation and impairment [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period (12,785) (10,946)  
Depreciation charge (1,230) (1,283)  
Impairment charge (618)    
Impairment reversal 2,008    
Transferred 11,667    
Foreign exchange translation 793 (556)  
Property, plant and equipment at ending period (165) (12,785) (10,946)
Right-of-use assets [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period 75,412    
Property, plant and equipment at ending period 121,095 75,412  
Right-of-use assets [member] | Gross carrying amount [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period 130,154 123,920  
Additions 78,646 861  
Disposals   (89)  
Transferred (21,264)    
Foreign exchange translation (9,299) 5,462  
Property, plant and equipment at ending period 178,237 130,154 123,920
Right-of-use assets [member] | Depreciation and impairment [member]      
Disclosure of detailed information about property, plant and equipment [line items]      
Property, plant and equipment at beginning period (54,742) (40,612)  
Depreciation charge (12,350) (12,312)  
Impairment charge (6,694)    
Disposals   88  
Transferred 12,797    
Foreign exchange translation 3,847 (1,906)  
Property, plant and equipment at ending period € (57,142) € (54,742) € (40,612)