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Income taxes - Schedule of Unrecognized Tax Benefits Roll Forward (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Unrecognized Tax Benefits [Roll Forward]    
Beginning balance $ 1,155 $ 954
Increase related to prior year tax positions (98)  
Increase related to prior year tax positions   0
Increase related to current year tax positions 120 201
Ending balance $ 1,177 $ 1,155