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Income Tax Expense - Summary of Tax Loss Carry Forward (Detail) - EUR (€) € in Thousands | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021
Disclosure Of Tax Loss Carryforwards [line items] |  |
Total | € 366,175 | € 368,780
Not More than Five Years [Member] |  |
Disclosure Of Tax Loss Carryforwards [line items] |  |
Total | € 5,132 | € 6,207
Expiration Date | 2023-2027 | 2022-2026
More than Five Years [Member] |  |
Disclosure Of Tax Loss Carryforwards [line items] |  |
Total | € 347 | € 3,257
Expiration Date | 2027 | 2026
No expiration [member] |  |
Disclosure Of Tax Loss Carryforwards [line items] |  |
Total | € 360,696 | € 359,316

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