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Changes in Significant Accounting Policies - Additional Information (Detail) - EUR (€) € in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Disclosure Of Redesignated Financial Assets And Liabilities [Line Items] |  |  |
Revenue | € 318,797 | € 328,618 | € 468,487
IFRS 16 [member] |  |  |
Disclosure Of Redesignated Financial Assets And Liabilities [Line Items] |  |  |
Lease incentives | 0 | 0 | 635
IFRS 12 [member] |  |  |
Disclosure Of Redesignated Financial Assets And Liabilities [Line Items] |  |  |
Revenue | € 750,000 | € 750,000 | € 750,000

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