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

Intangible assets - Summary of Movements in Intangible Assets (Detail)

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Intangible assets - Summary of Movements in Intangible Assets (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets € 24,648 € 8,333
Acquisition of subsidiary (MOMA)   19,404
Additions   1,322
Amortization (3,635) (3,691)
Reclassifications   (720)
Ending balance, intangible assets 21,013 24,648
Software and licenses    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets 4,283 4,135
Acquisition of subsidiary (MOMA)   2,120
Additions   0
Amortization (1,395) (1,252)
Reclassifications   (720)
Ending balance, intangible assets 2,888 4,283
Internally developed software    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets 3,312 4,198
Acquisition of subsidiary (MOMA)   0
Additions   1,322
Amortization (1,845) (2,208)
Reclassifications   0
Ending balance, intangible assets 1,467 3,312
Customer relationships    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets 6,329 0
Acquisition of subsidiary (MOMA)   6,560
Additions   0
Amortization (395) (231)
Reclassifications   0
Ending balance, intangible assets 5,934 6,329
Goodwill    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets 10,724 0
Acquisition of subsidiary (MOMA)   10,724
Additions   0
Amortization 0 0
Reclassifications   0
Ending balance, intangible assets 10,724 10,724
Cost    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets 38,023 18,017
Ending balance, intangible assets 38,023 38,023
Cost | Software and licenses    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets 6,606 5,206
Ending balance, intangible assets 6,606 6,606
Cost | Internally developed software    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets 14,133 12,811
Ending balance, intangible assets 14,133 14,133
Cost | Customer relationships    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets 6,560 0
Ending balance, intangible assets 6,560 6,560
Cost | Goodwill    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets 10,724 0
Ending balance, intangible assets 10,724 10,724
Accumulated amortization and impairment    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets (13,375) (9,684)
Ending balance, intangible assets (17,010) (13,375)
Accumulated amortization and impairment | Software and licenses    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets (2,323) (1,071)
Ending balance, intangible assets (3,718) (2,323)
Accumulated amortization and impairment | Internally developed software    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets (10,821) (8,613)
Ending balance, intangible assets (12,666) (10,821)
Accumulated amortization and impairment | Customer relationships    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets (231) 0
Ending balance, intangible assets (626) (231)
Accumulated amortization and impairment | Goodwill    
Reconciliation of changes in intangible assets other than goodwill [abstract]    
Beginning balance, intangible assets 0 0
Ending balance, intangible assets € 0 € 0