v3.26.1
Income taxes (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Income taxes [Abstract]      
Income tax expense $ 23 $ 51  
Effective tax rate 2.90% 72.90%  
Change in valuation allowance $ 0 $ 0  
Pre-tax income 789 $ 70  
Valuation allowance $ 8,500   $ 8,700
R&D Credit [Member] | Federal [Member]      
Income Taxes [Abstract]      
Carryforward period 20 years