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Long-term Borrowings - Additional Information (Detail) - EUR (€)
€ in Thousands
 1 Months Ended 3 Months Ended 12 Months Ended
Jan. 31, 2022
Mar. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Mar. 31, 2022
May 31, 2020
Mar. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Nov. 30, 2017
Dec. 31, 2015
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt     € 17,289 € 17,439                  
Interest expense related to long-term borrowings     € 423 € 405 € 405                
Bottom of range [member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt interest rate     3.00% 3.00%                  
Top of range [member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt interest rate     12.00% 12.00%                  
Italian Financial Institution [Member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt interest rate basis three-month Euribor (360)                        
Long-term debt interest rate spread 2.00%   0.055%                    
Long-term debt € 4,000                        
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     Six-month Euribor (360)                    
Long-term debt interest rate spread     2.50%                    
Mortgage loan     € 16,628                    
Long-term debt     2,344                    
Long-term debt lump sum repayment     € 1,944                    
Three-month Euribor (360) plus a 2.2% spread long-term debt with final payment due August 2022 [member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt nominal amount                     € 1,000    
Long-term debt maturity     August 2022 August 2022                  
Long-term debt interest rate basis     Three-month Euribor (360) Three-month Euribor (360)                  
Long-term debt interest rate spread     2.20% 2.20%                  
Long-term debt       € 139                  
Three-month Euribor (360) plus a 1.9% spread long-term debt with final payment due June 2023 [member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt nominal amount                       € 2,000  
Long-term debt maturity     June 2023 June 2023                  
Long-term debt interest rate basis     Three-month Euribor (360) Three-month Euribor (360)                  
Long-term debt interest rate spread     1.90% 1.90%                  
Long-term debt     € 0 € 621                  
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     € 3,451 € 4,518                  
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                    
Six-months Euribor (360) plus a 2.75% spread long-term debt with final payment due December 2022 [member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt maturity     December 2022 December 2022                  
Long-term debt interest rate basis     Six-month Euribor (360) Six-month Euribor (360)                  
Long-term debt interest rate spread     2.75% 2.75%                  
Long-term debt       € 92                  
Six-months Euribor (360) plus a 2.75% spread long-term debt with final payment due December 2022 [member] | Romanian Subsidiary [Member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt                   € 206      
0.21% fixed long-term debt with final payment due December 2030 [member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt nominal amount                 € 4,181        
Long-term debt maturity     December 2030 December 2030                  
Mortgage loan     € 13,936                    
Long-term debt     € 2,916 € 2,963                  
Long-term debt interest rate     0.21% 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     € 863                    
Long-term debt interest rate     80.00%                    
No interest rate long-term debt with final payment due September 2027 [member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt maturity     September 2027 September 2027                  
Long-term debt     € 345 € 395                  
Long-term debt interest rate     0.00% 0.00%                  
No interest rate long-term debt with final payment due September 2027 [member] | Swiss Subsidiary [Member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt nominal amount               € 378          
Long-term debt     € 345                    
Long-term debt interest rate     0.00%                    
11.76% Fixed long-term debt with final payment due October 2023 [member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt maturity     October 2023 October 2023                  
Long-term debt     € 116 € 216                  
Long-term debt interest rate     11.76% 11.76%                  
11.76% Fixed long-term debt with final payment due October 2023 [member] | Brazilian Subsidiary [Member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt     € 116       € 314            
Long-term debt interest rate     11.76%                    
Six-month Euribor (360) plus a 2.75% spread long-term debt with final payment due March 2025                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt maturity     March 2025 March 2025                  
Long-term debt interest rate basis     Six-month Euribor (360) Six-month Euribor (360)                  
Long-term debt     € 3,215 € 4,646                  
Long-term debt interest rate     2.75% 2.75%                  
Six-month Euribor (360) plus a 2.75% spread long-term debt with final payment due March 2025 | Romanian Subsidiary [Member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt interest rate basis     Six-month Euribor (360)                    
Long-term debt interest rate spread     2.75%                    
Long-term debt   € 5,000   € 3,215                  
Long-term debt state- guarantee percentage   90.00%                      
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 € 4,000   € 4,000                    
0.055 Fixed Long-Term Debt With Final Payment Due December 2025                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt maturity     December 2025 December 2025                  
Long-term debt     € 38     € 38              
Long-term debt interest rate     0.055% 0.055%                  
Three-month Euribor (360) [Member] | Bottom of range [member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt interest rate     0.68%                    
Three-month Euribor (360) [Member] | Top of range [member]                          
Disclosure Of Detailed Information About Borrowings [Line Items]                          
Long-term debt interest rate     4.48%