Income Tax Expense - Summary of Net Profit/(Loss) Before Income Taxes and Non-controlling Interest (Detail) - EUR (€) € in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disclosure Of Income Taxes [line items]
Profit / (loss) before tax	€ (14,698)	€ (15,072)	€ 3,561
Actual tax charge	684	1,090	2,273
IRES (state tax) [member]
Disclosure Of Income Taxes [line items]
Expected tax benefit (expense) at statutory tax rates	3,527	3,617	(855)
Tax exempt income	1,657	4,530	2,618
Aggregate effect of different tax rates in foreign jurisdictions	(254)	(481)	(79)
Italian regional tax	(11)	(8)	(28)
Non-deductible expenses	(3,140)	(5,675)	(1,635)
Tax effect on unremitted earnings	0	0	(755)
Chinese withholding tax on income not recoverable	0	(1,100)	0
Effect of net change in deferred tax assets unrecognised	(2,463)	(1,973)	(1,539)
Actual tax charge	(684)	(1,090)	(2,273)
Domestic [member]
Disclosure Of Income Taxes [line items]
Profit / (loss) before tax	(6,199)	(12,078)	(7,448)
Foreign [member]
Disclosure Of Income Taxes [line items]
Profit / (loss) before tax	€ (8,499)	€ (2,994)	€ 11,009

The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 8
-IssueDate 2024-01-01
-Paragraph 23
-Subparagraph h
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2024-en-r&anchor=para_23_h&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 26
-IssueDate 2024-01-01
-Paragraph 35
-Subparagraph b
-Clause viii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=26&code=ifrs-tx-2024-en-r&anchor=para_35_b_viii&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2024-01-01
-Paragraph 79
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_79&doctype=Standard
-URIDate 2024-03-27

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2024-01-01
-Paragraph 81
-Subparagraph c
-Clause i
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_c_i&doctype=Standard
-URIDate 2024-03-27

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 12
-IssueDate 2024-01-01
-Paragraph 81
-Subparagraph c
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2024-en-r&anchor=para_81_c_ii&doctype=Standard
-URIDate 2024-03-27

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 12
-IssueDate 2024-01-01
-Paragraph B13
-Subparagraph g
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_B13_g&doctype=Appendix&subtype=B
-URIDate 2024-03-27

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 82
-Subparagraph d
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_82_d&doctype=Standard
-URIDate 2024-03-27

Name:	ifrs-full_IncomeTaxExpenseContinuingOperations
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration