v3.26.1
Income taxes (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Operating Loss Carryforwards [Line Items]      
Effective tax rate 2.30%    
Income tax expense $ 301 $ 1,061  
Deferred tax assets net $ 0   $ 0
Maximum | United Kingdom      
Operating Loss Carryforwards [Line Items]      
R&D expenditure credits 15.00%