v3.26.3
Government Grants - Additional Information (Detail) - EUR (€)
€ in Thousands
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Disclosure Of Details of Government grants [Line Items]      
Net other income € 1,185 € 374  
Government grants receivables 594   € 607
Centro para el Desarrollo Tecnológico Industrial, E.P.E. (CDTI) [Member]      
Disclosure Of Details of Government grants [Line Items]      
Government grants 618   743
Agencia para la Competitividad de la Empresa de la Generalitat de Cataluña (ACCIÓ) [Member]      
Disclosure Of Details of Government grants [Line Items]      
Government grants 376   431
Agencia Estatal de Investigacion [Member]      
Disclosure Of Details of Government grants [Line Items]      
Government grants 56   65
Ministerio de Industria Comercio y Turismo [Member]      
Disclosure Of Details of Government grants [Line Items]      
Government grants 3,123   3,864
European Climate, Infrastructure and Environment Executive Agency (CINEA) [Member]      
Disclosure Of Details of Government grants [Line Items]      
Government grants 274   320
California Energy Comission [Member]      
Disclosure Of Details of Government grants [Line Items]      
Government grants 302   512
Camara De Comercio [Member]      
Disclosure Of Details of Government grants [Line Items]      
Government grants 97   102
Agencia de Residuos de Cataluna [Member]      
Disclosure Of Details of Government grants [Line Items]      
Government grants € 63   € 62