Annual and transition report of foreign private issuers [Sections 13 or 15(d)]

Intangible Assets - Summary of Changes in Intangible Assets (Detail)

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Intangible Assets - Summary of Changes in Intangible Assets (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Disclosure Of Intangible Assets [Line Items]    
Beginning balance € 33,590  
Ending balance 36,866 € 33,590
Cost    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 101,948 90,771
Additions 11,276 10,970
Disposal (71)  
Reclassifications 0 0
Exchange differences (889) 207
Ending balance 112,264 101,948
Amortization    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 68,358 59,786
Amortization 7,530 8,544
Disposal (71)  
Exchange differences (419) 28
Ending balance 75,398 68,358
Development Costs    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 545  
Ending balance 9,487 545
Development Costs | Cost    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 16,049 16,057
Additions 0 0
Disposal 0  
Reclassifications 10,457 0
Exchange differences (24) (8)
Ending balance 26,482 16,049
Development Costs | Amortization    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 15,504 13,967
Amortization 1,508 1,543
Disposal 0  
Exchange differences (17) (6)
Ending balance 16,995 15,504
Industrial Patents and Intellectual Property Rights    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 6,423  
Ending balance 5,957 6,423
Industrial Patents and Intellectual Property Rights | Cost    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 31,533 30,550
Additions 11 397
Disposal (71)  
Reclassifications 3,913 723
Exchange differences (52) (137)
Ending balance 35,334 31,533
Industrial Patents and Intellectual Property Rights | Amortization    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 25,110 19,940
Amortization 4,351 5,307
Disposal (71)  
Exchange differences (13) (137)
Ending balance 29,377 25,110
Concessions, Licenses, Trademarks and Similar Rights    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 7,573  
Ending balance 6,364 7,573
Concessions, Licenses, Trademarks and Similar Rights | Cost    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 26,106 25,890
Additions 97 165
Disposal 0  
Reclassifications 0 0
Exchange differences (116) 51
Ending balance 26,087 26,106
Concessions, Licenses, Trademarks and Similar Rights | Amortization    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 18,533 17,270
Amortization 1,218 1,250
Disposal 0  
Exchange differences (28) 13
Ending balance 19,723 18,533
Intangible Assets in Process and Advances    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 15,725  
Ending balance 12,504 15,725
Intangible Assets in Process and Advances | Cost    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 15,725 6,056
Additions 11,168 10,408
Disposal 0  
Reclassifications (14,370) (723)
Exchange differences (19) (16)
Ending balance 12,504 15,725
Intangible Assets in Process and Advances | Amortization    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 0 0
Amortization 0 0
Disposal 0  
Exchange differences 0 0
Ending balance 0 0
Other Intangible Assets    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 3,324  
Ending balance 2,554 3,324
Other Intangible Assets | Cost    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 12,535 12,218
Additions 0 0
Disposal 0  
Reclassifications 0 0
Exchange differences (678) 317
Ending balance 11,857 12,535
Other Intangible Assets | Amortization    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 9,211 8,609
Amortization 453 444
Disposal 0  
Exchange differences (361) 158
Ending balance € 9,303 € 9,211