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Cost Of Sales - Summary of Cost of Sales (Detail) - EUR (€) € in Thousands | 12 Months Ended
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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

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