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Intangible assets and goodwill - Consolidated statements of profit or loss and other comprehensive income (Details) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Intangible assets and goodwill      
Internally-developed software cost capitalized € 28,301 € 17,730 € 11,794
Personnel expenses      
Intangible assets and goodwill      
Internally-developed software cost capitalized 21,773 15,560 11,592
Purchases services and licenses (excluding depreciation and amortization)      
Intangible assets and goodwill      
Internally-developed software cost capitalized € 6,528 € 2,170 € 202