Cost Of Sales - Summary of Cost of Sales (Detail) - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Disclosure of cost of sales [abstract]
Opening inventories	€ 91,077	€ 91,014
Purchases	177,591	180,872
Labor	89,827	92,330
Third party manufacturers	6,039	8,725
Other manufacturing costs	29,004	37,605
Amortization charge of capital grants	(1,061)	(1,068)
Closing inventoires	(84,227)	(91,077)
Total	€ 308,250	€ 318,401

The amount of current inventories. [Refer: Inventories]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 2
-IssueDate 2018-01-01
-Paragraph 36
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=2&date=2018-03-01&anchor=para_36_b&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 g
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_g&doctype=Standard
-URIDate 2018-03-16

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Name IAS
-Number 1
-IssueDate 2018-01-01
-Paragraph 68
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_68&doctype=Standard
-URIDate 2018-03-16

Name:	ifrs-full_Inventories
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant