Annual and transition report of foreign private issuers pursuant to Section 13 or 15(d)

Segmentation - Summary of the Amount of Total Non-Current Assets (Detail)

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Segmentation - Summary of the Amount of Total Non-Current Assets (Detail) - EUR (€)
€ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Disclosure of Non Current Assets By Country [Line Items]    
Non-current assets € 274,428 € 207,183
The Netherlands    
Disclosure of Non Current Assets By Country [Line Items]    
Non-current assets 101,934 109,851
Belgium    
Disclosure of Non Current Assets By Country [Line Items]    
Non-current assets 14,609 8,778
Germany    
Disclosure of Non Current Assets By Country [Line Items]    
Non-current assets 85,179 43,510
France    
Disclosure of Non Current Assets By Country [Line Items]    
Non-current assets 41,136 32,675
Other    
Disclosure of Non Current Assets By Country [Line Items]    
Non-current assets € 31,570 € 12,369