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Intangibles Assets and Goodwill - Summary of Carrying Amount of Intangible Assets, Goodwill and Accumulated Depreciation (Detail) - EUR (€) € in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | € 5,837 | € 3,927
Ending balance | 5,892 | 5,837
Gross carrying amount [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 46,668 | 43,323
Additions | 880 | 3,280
Disposals | (45) | (8)
Effect of traslation adj. | 82 | 73
Ending balance | 47,585 | 46,668
Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (40,831) | (39,396)
Amortisation | (910) | (1,569)
Disposals | 43 | 8
Effect of traslation adj. | 4 | 126
Ending balance | (41,693) | (40,831)
Trademark patents and other [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 317 | 565
Ending balance | 312 | 317
Trademark patents and other [member] | Gross carrying amount [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 13,896 | 13,715
Additions | 169 |
Disposals | (3) | (8)
Effect of traslation adj. | (41) | 189
Ending balance | 14,021 | 13,896
Trademark patents and other [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (13,579) | (13,150)
Amortisation | (158) | (563)
Disposals | 1 | 8
Effect of traslation adj. | 27 | 126
Ending balance | (13,709) | (13,579)
Software [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 1,674 | 1,441
Ending balance | 1,633 | 1,674
Software [member] | Gross carrying amount [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 28,926 | 27,687
Additions | 711 | 1,239
Disposals | (42) |
Effect of traslation adj. | 22 |
Ending balance | 29,617 | 28,926
Software [member] | Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | (27,252) | (26,246)
Amortisation | (752) | (1,006)
Disposals | 42 |
Effect of traslation adj. | (22) |
Ending balance | (27,984) | (27,252)
Goodwill [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 3,846 | 1,921
Ending balance | 3,947 | 3,846
Goodwill [member] | Gross carrying amount [member] |  |
Disclosure of reconciliation of changes in intangible assets and goodwill [line items] |  |
Beginning balance | 3,846 | 1,921
Additions |  | 2,041
Effect of traslation adj. | 101 | (116)
Ending balance | € 3,947 | € 3,846

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- Definition The amount of amortisation of intangible assets other than goodwill. [Refer: Depreciation and amortisation expense; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 38 -IssueDate 2018-01-01 -Paragraph 118 -Subparagraph e -Clause vi -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2018-03-01&anchor=para_118_e_vi&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The decrease in intangible assets and goodwill resulting from disposals. [Refer: Intangible assets and goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 38 -IssueDate 2018-01-01 -Paragraph 118 -Subparagraph e -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2018-03-01&anchor=para_118_e_ii&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_55&doctype=Standard -URIDate 2018-03-16 + Details
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