v3.26.1
Income taxes - Income tax expense benefit (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Income Taxes      
Income tax expenses $ (1,502) $ 27 $ (140)
Deferred income tax benefit (1,574) (261) (250)
Income tax (expense) benefit 1,502 (27) 140
Hong Kong      
Income Taxes      
Income tax expenses (72) (288) (110)
Deferred income tax benefit 1,574 261 250
Income tax (expense) benefit $ 72 $ 288 $ 110