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Employees' Leaving Entitlement - Summary of Quantitative Sensitivity Analysis for Significant Assumptions (Detail) - EUR (€) € in Thousands | Dec. 31, 2018 | Dec. 31, 2017
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Actuarial assumption of turnover rate [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Quantitative sensitivity analysis, increase | € (68) | € (118)
Quantitative sensitivity analysis, decrease | 75 | 132
Actuarial assumption of expected rates of inflation [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Quantitative sensitivity analysis, increase | 259 | 298
Quantitative sensitivity analysis, decrease | (256) | (292)
Actuarial assumption of discount rates [member] |  |
Disclosure of sensitivity analysis for actuarial assumptions [line items] |  |
Quantitative sensitivity analysis, increase | (402) | (461)
Quantitative sensitivity analysis, decrease | € 417 | € 479

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- Definition The increase (decrease) in a defined benefit obligation that would have been caused by a decrease in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2018-01-01 -Paragraph 145 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2018-03-01&anchor=para_145_a&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The increase (decrease) in a defined benefit obligation that would have been caused by an increase in a significant actuarial assumption that was reasonably possible at the end of the reporting period. [Refer: Actuarial assumptions [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 19 -IssueDate 2018-01-01 -Paragraph 145 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=19&date=2018-03-01&anchor=para_145_a&doctype=Standard -URIDate 2018-03-16 + Details
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