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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, 2023	Dec. 31, 2022
Disclosure of detailed information about financial instruments [line items]
Financial assets	€ 85,675	€ 116,629
Financial liabilities	197,882	211,179
U.S. dollars [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	29,865	35,160
Financial liabilities	47,648	41,618
Net Exposure	(17,783)	(6,458)
Chinese Yuan [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	10,280	14,681
Financial liabilities	5,820	8,206
Net Exposure	4,460	6,475
British pounds [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	3,873	9,499
Financial liabilities	8,126	10,089
Net Exposure	(4,253)	(590)
Brazilian Reais [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	4,288	4,457
Financial liabilities	1,596	2,371
Net Exposure	2,692	2,086
Romanian Leu [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	482	2,723
Financial liabilities	6,583	8,732
Net Exposure	(6,101)	(6,009)
Mexican pesos [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	1,906	1,713
Financial liabilities	1,674	1,850
Net Exposure	232	(137)
Canadian dollars [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	198	397
Financial liabilities	99	427
Net Exposure	99	(30)
Other [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	1,932	2,245
Financial liabilities	4,003	4,607
Net Exposure	(2,071)	(2,362)
Total currencies [member]
Disclosure of detailed information about financial instruments [line items]
Financial assets	52,824	70,875
Financial liabilities	75,549	77,900
Net Exposure	€ (22,725)	€ (7,025)

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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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