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Supplier Accounts Payable and Other Current Liabilities - Schedule of Other Current Liabilities (Details) (Detail) - EUR (€) € in Thousands	Jun. 30, 2019	Dec. 31, 2018
Disclosure Of Supplier Accounts And Other Current Liabilities [abstract]
Social security	€ 13,238	€ 6,343
Tax liabilities	203	448
Other debts	253	1,354
Deferred revenues	5,470	4,360
Total	€ 19,164	€ 12,506

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- Definition

Disclosure of supplier accounts and other current liabilities.

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Other debts current.

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- Definition

The amount of current payables on social security and taxes other than incomes tax. [Refer: Payables on social security and taxes other than income tax]

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The current amount of current tax liabilities. [Refer: Current tax liabilities]

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The amount of deferred income classified as current. [Refer: Deferred income]

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The amount of current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Current liabilities]

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