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Total Operating Expenses - Additional Information (Detail) - EUR (€) € in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2019 | Jun. 30, 2018 | Jun. 30, 2019 | Jun. 30, 2018
Disclosure Of Operating Expenses [abstract] |  |  |  |
Research and development costs | € 9,984 | € 12,523 | € 20,355 | € 22,821
Management and administration costs | 3,119 | 2,639 | 5,055 | 5,491
Litigation and opposition | 59 | 552 | 123 | 849
Other operating expenses | € 3,684 | € 2,745 | € 7,624 | € 5,134

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- Definition The amount of expenditure directly attributable to research or development activities, recognised in profit or loss. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2018-01-01 -Paragraph 126 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2018-03-01&anchor=para_126&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Litigation costs. + References No definition available. + Details
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