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Financial Instruments - Fair Values and Risk Management - Summary Of Quantitative Information About Exposure To Currency Risk (Detail) - EUR (€) € in Thousands	Dec. 31, 2022	Dec. 31, 2021
Disclosure of detailed information about financial instruments [line items]
Financial assets	€ 116,629	€ 110,699
Financial liabilities	211,179	232,083
U.S. dollars [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	35,160	29,658
Financial liabilities	41,618	46,930
Net Exposure	(6,458)	(17,272)
Chinese Yuan [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	14,681	18,927
Financial liabilities	8,206	14,192
Net Exposure	6,475	4,735
British pounds [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	9,499	15,027
Financial liabilities	10,089	16,664
Net Exposure	(590)	(1,637)
Brazilian Reais [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	4,457	4,334
Financial liabilities	2,371	2,435
Net Exposure	2,086	1,899
Canadian dollars [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	397	2,263
Financial liabilities	427	1,290
Net Exposure	(30)	973
Romanian Leu [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	2,723	666
Financial liabilities	8,732	7,934
Net Exposure	(6,009)	(7,268)
Mexican pesos [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	1,713	1,395
Financial liabilities	1,850	1,883
Net Exposure	(137)	(488)
Other [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	2,245	5,178
Financial liabilities	4,607	7,233
Net Exposure	(2,362)	(2,055)
Total currencies [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	70,875	77,448
Financial liabilities	77,900	98,561
Net Exposure	€ (7,025)	€ (21,113)

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The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

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