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Income Tax Expense - Summary of Tax Loss Carry Forward (Detail) € in Thousands | Dec. 31, 2018 EUR (€)
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Disclosure Of Tax Loss Carryforwards [line items] |
Total | € 393,630
Within 1 year [member] |
Disclosure Of Tax Loss Carryforwards [line items] |
Total | 2,833
2020 [member] |
Disclosure Of Tax Loss Carryforwards [line items] |
Total | 5,368
2021 [member] |
Disclosure Of Tax Loss Carryforwards [line items] |
Total | 6,586
2022 [member] |
Disclosure Of Tax Loss Carryforwards [line items] |
Total | 4,051
2023 [member] |
Disclosure Of Tax Loss Carryforwards [line items] |
Total | 6,809
Later than five years [member] |
Disclosure Of Tax Loss Carryforwards [line items] |
Total | 39,333
No expiration [member] |
Disclosure Of Tax Loss Carryforwards [line items] |
Total | € 328,650

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