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Cost of Sales - Additional Information (Detail) - EUR (€) € in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure Of Cost Of Sales [line items]
Depreciation and amortisation	€ 10,003	€ 11,362
Other manufacturing costs [member] | Cost of sales [member]
Disclosure Of Cost Of Sales [line items]
Depreciation and amortisation	€ 7,489	€ 8,638

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- Definition

The amount of depreciation and amortisation expense. Depreciation and amortisation are the systematic allocations of depreciable amounts of assets over their useful lives.

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- Definition

Disclosure Of Cost Of Sales [line items]

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No definition available.

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