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Employee Benefits - Summary of Personnel Expenses Recognized for Share-based Payment Transactions (Detail) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Expense from share-based payment transactions with employees € 13,307 € 32,625 € 2,455
Management stock option plan [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Expense from share-based payment transactions with employees 2,915 14,377 2,382
Employee stock option plan [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Expense from share-based payment transactions with employees 73   € 73
Founders Stock Option Plan [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Expense from share-based payment transactions with employees   8,195  
RSU Employees [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Expense from share-based payment transactions with employees 11,289 6,862  
RSU Management [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Expense from share-based payment transactions with employees 1,508 3,103  
Performance based earn out in shares and RSUs management [Member] | AR Electronic Solutions, S.L. [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Expense from share-based payment transactions with employees 647 531  
Performance based earn out in shares and RSUs management [Member] | Coil, Inc. [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Expense from share-based payment transactions with employees (744) 1,769  
ESPP [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Expense from share-based payment transactions with employees 265    
Capitalization of sharebased payment transactions in intangible assets [Member]      
Disclosure of terms and conditions of share-based payment arrangement [line items]      
Expense from share-based payment transactions with employees € (2,573) € (2,212)