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Property, Plant and Equipment - Summary of Property, Plant and Equipment by Country (Detail) - EUR (€) € in Thousands | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2017
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Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property plant and equipment | € 111,086 | € 115,190 | € 121,705
Italy [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property plant and equipment | 61,271 | 64,117 |
Romania [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property plant and equipment | 23,406 | 24,157 |
United States of America [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property plant and equipment | 17,830 | 16,440 |
Brazil [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property plant and equipment | 4,552 | 5,009 |
China [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property plant and equipment | 2,562 | 4,908 |
Europe [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property plant and equipment | 1,463 | 555 |
Other countries [member] |  |  |
Disclosure of detailed information about property, plant and equipment [line items] |  |  |
Property plant and equipment | € 2 | € 4 |

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- Definition The amount of tangible assets that: (a) are held for use in the production or supply of goods or services, for rental to others, or for administrative purposes; and (b) are expected to be used during more than one period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2018-01-01 -Paragraph 73 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2018-03-01&anchor=para_73_e&doctype=Standard -URIDate 2018-03-16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_a&doctype=Standard -URIDate 2018-03-16 + Details
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