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Income Tax Expense - Summary of Movements in deferred Tax Balances (Detail) - EUR (€)
€ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Deferred Tax Assets And Liabilities [line items]      
initial balance € (110) € (492) € 83
Recognised in profit or loss 146 382 (575)
Final balance 36 (110) (492)
Deferred tax assets [member]      
Deferred Tax Assets And Liabilities [line items]      
initial balance 1,295 2,023 1,974
Recognised in profit or loss 670 (728) 49
Final balance 1,965 1,295 2,023
Deferred tax liability [member]      
Deferred Tax Assets And Liabilities [line items]      
initial balance (1,405) (2,515) (1,891)
Recognised in profit or loss (524) 1,110 (624)
Final balance € (1,929) € (1,405) € (2,515)