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Share Capital, Reserves and Retained Earnings - Disclosure of Disaggregation of Changes of OCI (Detail) - EUR (€) € in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Disclosure of Share Capital Reserves and Other Equity Interest [line items]
Exchange difference on translation of foreign operations	€ 1,709	€ (3,575)	€ 475
Share of OCI of equity-method investees	2,328	(373)	111
Actuarial losses on employees' leaving entitlement	(627)	(212)	(615)
Total	3,410	(4,160)	(29)
Translation reserve [member]
Disclosure of Share Capital Reserves and Other Equity Interest [line items]
Exchange difference on translation of foreign operations	1,709	(3,575)	475
Share of OCI of equity-method investees	2,328	(373)	111
Total	4,037	(3,948)	586
Remeasurement of defined benefit obligation [member]
Disclosure of Share Capital Reserves and Other Equity Interest [line items]
Actuarial losses on employees' leaving entitlement	(627)	(212)	(615)
Total	€ (627)	€ (212)	€ (615)

X

- Definition

The decrease (increase) in the net defined benefit liability (asset) resulting from settlements. Settlements are transactions that eliminate all further legal or constructive obligations for part or all of the benefits provided under a defined benefit plan, other than a payment of benefits to, or on behalf of, employees that is set out in the terms of the plan and included in the actuarial assumptions. [Refer: Net defined benefit liability (asset); Defined benefit plans [member]; Actuarial assumptions [member]]

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- Definition

The amount of other comprehensive income, before tax, after reclassification adjustments, related to exchange differences on translation of financial statements of foreign operations. [Refer: Other comprehensive income, before tax]

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Total disaggregation of changes in other comprehensive income.

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