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Stock-based compensation - Schedule of Stock-Based Compensation Expense (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation expense $ 1,321 $ 1,218 $ 2,544 $ 2,260
Income Statement Location [Axis]: us-gaap:CostOfRevenue        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation expense 145 120 234 213
Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation expense 923 937 1,903 1,657
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation expense 106 50 171 190
Income Statement Location [Axis]: us-gaap:SellingAndMarketingExpense        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Total stock-based compensation expense $ 147 $ 111 $ 236 $ 200