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Long-term Borrowings - Additional Information (Detail) - EUR (€) € in Thousands |  |  | 1 Months Ended | 12 Months Ended |  |  |  |  |
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Apr. 09, 2024 | Mar. 31, 2024 | Mar. 31, 2024 | Jan. 31, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Apr. 01, 2023 | Jan. 31, 2022 | Mar. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2015
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt nominal amount |  | € 2,500 | € 2,500 | € 3,000 |  |  |  |  |  |  |  |  |
Long-term debt maturity |  |  | March 31, 2027 | December 31, 2028 |  |  |  |  |  |  |  |  |
Long-term debt interest rate basis |  |  |  | Euribor 3M |  |  |  |  |  |  |  |  |
Long-term debt interest rate spread | 2.50% | 2.50% | 2.50% | 2.95% |  |  |  |  |  |  |  |  |
Long-term debt |  | € 2,500 | € 2,500 |  | € 18,720 | € 17,353 |  |  |  |  |  |  |
Long-term debt interest rate |  | 2.50% | 2.50% |  | 6.308% |  |  |  |  |  |  |  |
Interest expense related to long-term borrowings |  |  |  |  | € 768 | € 599 | € 423 |  |  |  |  |  |
Debt guaranteeing loan percentage |  |  |  | 90.00% |  |  |  |  |  |  |  |  |
Interest-bearing loan effective date |  | Mar. 31, 2024 |  |  |  |  |  |  |  |  |  |  |
Interest bearing loan maturity date | Mar. 31, 2027 | Mar. 31, 2027 |  |  |  |  |  |  |  |  |  |  |
Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt interest rate |  |  |  |  | 3.00% | 3.00% |  |  |  |  |  |  |
Long-term borrowings [member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt interest rate |  |  |  |  | 3.60% |  |  |  |  |  |  |  |
Long-term borrowings [member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt interest rate |  |  |  |  | 7.80% |  |  |  |  |  |  |  |
Italian Financial Institution [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  | € 1,170 |  |  |  |  |  |  |  |
Six-month Euribor (360) plus a 2.5% spread long-term debt with final payment due August 2021 [member] | Bottom of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Cash receipt turnover percentage |  |  |  |  |  | 60.00% |  |  |  |  |  |  |
Earnings before interest, taxes, depreciation and amortization (EBITDA) percentage |  |  |  |  |  | 4.50% |  |  |  |  |  |  |
Debt Service Cover Ratio |  |  |  |  |  | 1.35% |  |  |  |  |  |  |
Six-month Euribor (360) plus a 2.5% spread long-term debt with final payment due August 2021 [member] | Top of range [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Net debt to EBITDA |  |  |  |  |  | 3.00% |  |  |  |  |  |  |
Six-month Euribor (360) plus a 2.5% spread long-term debt with final payment due August 2021 [member] | Romanian Subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt nominal amount |  |  |  |  |  |  |  |  |  |  |  |  | € 10,000
Long-term debt maturity |  |  |  |  |  | August 2023 |  |  |  |  |  |  |
Long-term debt interest rate basis |  |  |  |  |  | 6-month Euribor (360) |  |  |  |  |  |  |
Long-term debt interest rate spread |  |  |  |  |  | 2.50% |  |  |  |  |  |  |
Mortgage loan |  |  |  |  |  | € 16,628 |  |  |  |  |  |  |
Six months euribor (360) plus 2.75% percentage spread long term debt with repayment until july 2025 [Member] | Romanian Subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt maturity |  |  |  |  |  | July 2025 |  |  |  |  |  |  |
2.3% fixed long-term debt with final payment due January 2026 [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt nominal amount |  |  |  |  | € 7,000 |  |  |  |  |  |  |  |
Long-term debt maturity |  |  |  |  | January 2026 | January 2026 |  |  |  |  |  |  |
Long-term debt |  |  |  |  | € 1,240 | € 2,358 |  |  |  |  |  |  |
Long-term debt interest rate |  |  |  |  | 2.30% | 2.30% |  |  |  |  |  |  |
2.3% fixed long-term debt with final payment due January 2026 [member] | Matera [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Mortgage loan |  |  |  |  | € 14,000 |  |  |  |  |  |  |  |
0.42% Fixed long-term debt with final payment due December 2034 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt nominal amount |  |  |  |  |  |  |  |  |  |  |  | € 4,181 |
Long-term debt maturity |  |  |  |  |  |  |  | December 2034 |  |  |  |  |
Mortgage loan |  |  |  |  | € 13,936 |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  |  | € 7,734 |  |  |  |  |  |  |
Long-term debt interest rate |  |  |  |  |  |  |  | 0.21% |  |  |  |  |
80% of six-months Euribor (360) plus a 0.95% spread long-term debt with final payment due January 2035 italian subsidiaries [member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt nominal amount |  |  |  |  |  |  |  |  |  |  |  | € 435 |
Long-term debt maturity |  |  |  |  | January 2035 |  |  |  |  |  |  |  |
Long-term debt interest rate basis |  |  |  |  | Six-month Euribor (360) |  |  |  |  |  |  |  |
Long-term debt interest rate spread |  |  |  |  | 0.95% |  |  |  |  |  |  |  |
Mortgage loan |  |  |  |  | € 3,000 |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  | 1,035 |  |  |  |  |  |  |  |
Long term debt disbursement amount |  |  |  |  | € 581 |  |  |  |  |  |  |  |
Long-term debt interest rate |  |  |  |  | 80.00% |  |  |  |  |  |  |  |
1.5% percentage fixed long-term debt with final payment due September 2027 | Swiss Subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt nominal amount |  |  |  |  |  |  |  |  |  |  | € 378 |  |
Long-term debt |  |  |  |  | € 217 |  |  |  |  |  |  |  |
Long-term debt interest rate |  |  |  |  |  |  |  |  | 1.50% |  |  |  |
Six-month Euribor (360) plus a 2.75% spread long-term debt with final payment due March 2025 [member] | Romanian Subsidiary [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt nominal amount |  |  |  |  | € 5,000 |  |  |  |  |  |  |  |
Long-term debt maturity |  |  |  |  | March 2025 |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  | € 1,313 |  |  |  |  |  |  |  |
Three-month Euribor (360) plus 2.00% spread long-term debt with final payment due December 2027 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt maturity |  |  |  |  | December 2027 | December 2027 |  |  |  |  |  |  |
Long-term debt interest rate basis |  |  |  |  | Three-month Euribor (360) | Three-month Euribor (360) |  |  |  |  |  |  |
Long-term debt interest rate spread |  |  |  |  | 2.00% | 2.00% |  |  |  |  |  |  |
Long-term debt |  |  |  |  | € 2,400 | € 3,200 |  |  |  | € 4,000 |  |  |
Three-month Euribor (360) plus a 2.95% spread long-term debt with final payment due December 2028 | Events After Reporting Period |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  | 2,526 |  |  |  |  |  |  |  |
2.5% Fixed rate long-term debt to majority shareholder with final payment due March 2027 |  |  |  |  |  |  |  |  |  |  |  |  |
Disclosure Of Detailed Information About Borrowings [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt |  |  |  |  | € 2,255 |  |  |  |  |  |  |  |

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