Expenses and net other income - Summary of Changes in Inventories and Raw Materials and Consumables Used (Detail) - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Disclosure of Changes In Inventories And Raw Materials And Consumables Used [Abstract]
Consumption of finished goods, raw materials and other consumables	€ 87,933	€ 81,002	€ 42,224
Scrap stock, slow moving & obsolete accrual	999	864	311
Work carried out by other companies	6,571	3,739	1,718
Total	€ 95,503	€ 85,605	€ 44,253

Disclosure Of Changes In Inventories And Raw Materials And Consumables Used Abstract

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