v3.26.1
Property and equipment, net - Depreciation expenses on property and equipment allocated to expense items (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Property and equipment, net      
Total depreciation expenses $ 7,666 $ 7,880 $ 7,616
Total impairment loss 119 144 1,029
Cost of revenues      
Property and equipment, net      
Total depreciation expenses 1,515 618 77
Selling, general and administrative expenses      
Property and equipment, net      
Total depreciation expenses 2,273 2,581 4,222
Total impairment loss 0 0 64
Research and development expenses      
Property and equipment, net      
Total depreciation expenses 3,878 4,681 3,317
Total impairment loss $ 119 $ 144 $ 965