Annual and transition report of foreign private issuers pursuant to Section 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, 2023
Dec. 31, 2022
Disclosure Of Intangible Assets [Line Items]    
Beginning balance € 32,158  
Ending balance 30,985 € 32,158
Cost    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 82,773 74,260
Additions 8,696 8,097
Disposal (427) 0
Reclassifications 0 0
Exchange differences (271) 417
Ending balance 90,771 82,773
Amortization    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 50,616 42,332
Amortization 9,640 8,116
Disposal (402) 0
Exchange differences (67) 168
Ending balance 59,786 50,616
Development Costs    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 4,634  
Ending balance 2,090 4,634
Development Costs | Cost    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 16,081 16,081
Additions 0 0
Disposal 0 0
Reclassifications 0 0
Exchange differences (24) 0
Ending balance 16,057 16,081
Development Costs | Amortization    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 11,447 8,752
Amortization 2,537 2,694
Disposal 0 0
Exchange differences (17) 1
Ending balance 13,967 11,447
Industrial Patents and Intellectual Property Rights    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 10,087  
Additions 3,571  
Ending balance 10,610 10,087
Industrial Patents and Intellectual Property Rights | Cost    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 25,255 16,923
Additions 3,571 4,792
Disposal (402) 0
Reclassifications 2,072 3,435
Exchange differences 55 105
Ending balance 30,550 25,255
Industrial Patents and Intellectual Property Rights | Amortization    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 15,168 11,838
Amortization 5,125 3,271
Disposal (402) 0
Exchange differences 49 59
Ending balance 19,940 15,168
Concessions, Licenses, Trademarks and Similar Rights    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 9,908  
Ending balance 8,620 9,908
Concessions, Licenses, Trademarks and Similar Rights | Cost    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 25,885 25,877
Additions 102 43
Disposal 0 0
Reclassifications 0 0
Exchange differences (96) (35)
Ending balance 25,890 25,885
Concessions, Licenses, Trademarks and Similar Rights | Amortization    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 15,977 14,502
Amortization 1,314 1,483
Disposal 0 0
Exchange differences (20) (8)
Ending balance 17,270 15,977
Intangible Fixed Assets in Process and Advances    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 3,147  
Ending balance 6,056 3,147
Intangible Fixed Assets in Process and Advances | Cost    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 3,147 4,073
Additions 5,023 2,667
Disposal (25) 0
Reclassifications (2,072) (3,593)
Exchange differences (17) 0
Ending balance 6,056 3,147
Intangible Fixed Assets in Process and Advances | Amortization    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 0 0
Amortization 0 0
Disposal 0 0
Exchange differences 0 0
Ending balance 0 0
Other Intangible Assets    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 4,382  
Ending balance 3,609 4,382
Other Intangible Assets | Cost    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 12,406 11,306
Additions 0 595
Disposal 0 0
Reclassifications 0 158
Exchange differences (188) 347
Ending balance 12,218 12,406
Other Intangible Assets | Amortization    
Disclosure Of Intangible Assets [Line Items]    
Beginning balance 8,024 7,240
Amortization 664 668
Disposal 0 0
Exchange differences (79) 116
Ending balance € 8,609 € 8,024