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

Taxation - Summary of Reconciliation of Effective Tax Rate (Detail)

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Taxation - Summary of Reconciliation of Effective Tax Rate (Detail) - EUR (€)
€ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Major components of tax expense (income) [abstract]      
Loss before income tax € (109,778) € (304,656) € (319,320)
Income tax expense at statutory tax rate, Amount € 28,323 € 78,601 € 79,830
Income tax expense at statutory tax rate, Percent (25.80%) (25.80%) (25.00%)
Adjustments to arrive at the effective tax rate:      
Impact of different tax rates of local jurisdictions, Amount € 31 € 165 € 0
Impact of different tax rates of local jurisdictions, Percentage 0.00% (0.10%) 0.00%
Non-taxable income, Amount € 96 € 7,987 € 0
Non-taxable income, Percentage (0.10%) (2.60%) 0.00%
Non-deductible expenses, Amount € (8,387) € (68,372) € (74,033)
Non-deductible expenses, Percentage 7.60% 22.40% 23.20%
Temporary differences for which no deferred tax is recognized, Amount € (9,305) € (2,412) € (5,997)
Temporary differences for which no deferred tax is recognized, Percentage 8.50% 0.80% 1.90%
Adjustments in respect of current income tax of previous years € (34) € (64) € 0
Adjustments previous year 0.00% 0.00% 0.00%
(De)recognition of (un)recognized deferred tax assets, Amount € (11,152) € (16,464) € (152)
(De)recognition of (un)recognized deferred tax assets, Percentage 10.20% 5.40% 0.00%
Other, Amount € (76) € (77) € 0
Other, Percentage 0.10% 0.00% 0.00%
Effective tax (rate), Amount € (504) € (636) € (352)
Effective tax (rate), Percentage 0.50% 0.20% 0.10%