v3.26.3
Segment reporting - Single reportable segment (Details) - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]    
Total revenues $ 356,682 $ 323,281
Total cost of revenues (283,969) (273,280)
Gross profit 72,713 50,001
Total operating expenses (91,883) (115,153)
Loss from operation (19,170) (65,152)
Interest income 2,509 1,554
Interest expense (17,982) (10,239)
Gain from equity method investments, net 14,161 113
Other non-operating (expenses) income (1,478) 3,137
Loss before income taxes (21,960) (70,587)
Income tax expenses (1,041) (2,052)
Net loss (23,001) (72,639)
Reportable segment    
Segment Reporting [Line Items]    
Total revenues 356,682 323,281
Total cost of revenues (283,969) (273,280)
Gross profit 72,713 50,001
Operating expenses excluding share-based compensation expense (90,416) (108,649)
Share-based compensation expense (1,467) (6,504)
Total operating expenses (91,883) (115,153)
Loss from operation (19,170) (65,152)
Interest income 2,509 1,554
Interest expense (17,982) (10,239)
Gain from equity method investments, net 14,161 113
Other non-operating (expenses) income (1,478) 3,137
Loss before income taxes (21,960) (70,587)
Income tax expenses (1,041) (2,052)
Net loss $ (23,001) $ (72,639)