v3.26.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Government subsidies and Foreign currency exchange rate risk (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES    
Government subsidies received $ 25 $ 0
Depreciation of foreign currency (as a percent) 3.10% 0.41%