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Operating Expenses - Summary of Personnel Expenses (Detail) - EUR (€) € in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Disclosure of personnel expense [Abstract] |  |  |
Wages and salaries | € 22,451 | € 14,651 | € 7,243
Social security contributions | 7,157 | 3,903 | 3,193
Expenses for pension commitments | 1,583 | 982 | 116
Employer contribution to bonus shares | 1,857 | 6,456 | 1,198
Share-based payments | 30,781 | 34,353 | 10,419
Total | € 63,830 | € 60,345 | € 22,168

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- Definition Expenses for pension commitments. + References No definition available. + Details
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- Definition Adjustments for share-based payments to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 20 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_20_b&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of employer contributions to retirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 26 -IssueDate 2017-01-01 -Paragraph 35 -Subparagraph b -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=26&date=2017-03-01&anchor=para_35_b_i&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition A class of employee benefits expense that represents social security contributions. [Refer: Employee benefits expense] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 19 -IssueDate 2017-01-01 -Paragraph 9 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2017-03-01&anchor=para_9&doctype=Standard -URIDate 2017-03-09 + Details
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