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STOCK BASED COMPENSATION - Stock-based activities (Details) - ADSs - $ / shares
6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
ADS Underlying Options      
Number of options outstanding at beginning of period 1,440,664    
Number of options outstanding at end of period 1,108,159   1,440,664
Weighted Average Exercise Price      
Outstanding at beginning of the period $ 16.8    
Outstanding at the end of the period $ 21.92   $ 16.8
Amended plan      
ADS Underlying Options      
Number of options outstanding at beginning of period 55,541    
Granted 124,514 0  
Number of options outstanding at end of period 180,055   55,541
Exercisable options (in shares) 2,043    
Weighted Average Exercise Price      
Outstanding at beginning of the period $ 150.47    
Granted 9.07    
Outstanding at the end of the period 52.69   $ 150.47
Exercisable options (in dollars per share) $ 2,576.66    
Weighted Average Contractual Terms      
Contractual term (in years) 9 years 3 months 18 days   9 years 9 months 3 days
Exercisable options (in years) 7 years 10 months 17 days