v3.26.1
SHARE-BASED COMPENSATION (Details)
$ in Thousands, shares in Millions
1 Months Ended 12 Months Ended
Oct. 31, 2025
shares
Mar. 31, 2022
shares
Jun. 30, 2018
shares
Dec. 31, 2025
USD ($)
installment
shares
Dec. 31, 2024
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2020
shares
SHARE-BASED COMPENSATION              
Annual percentage increase in number of shares authorized for issuance     4.00%        
Share-based compensation expenses | $       $ 6,848 $ 5,602 $ 7,319  
Intrinsic value of stock options exercised | $       0 0 0  
Stock options              
SHARE-BASED COMPENSATION              
Share-based compensation expenses | $       0 100 400  
Unrecognized compensation cost related to non-vested stock options | $       0      
Restricted Stock Units and PRSUs              
SHARE-BASED COMPENSATION              
Share-based compensation expenses | $       6,800 5,500 6,900  
Unrecognized compensation cost related to non-vested restricted stock | $       $ 11,900      
Non-vested awards not yet recognized weighted-average period for recognition       1 year 10 months 24 days      
Fair value of restricted stock vested | $       $ 5,500 $ 4,400 $ 8,600  
Restricted stock units              
SHARE-BASED COMPENSATION              
Number of deferred shares | shares       0.3      
2018 Plan              
SHARE-BASED COMPENSATION              
Vesting terms of stock options       stock options vest 25% upon the first anniversary of the date of grant and the remainder ratably monthly thereafter for 36 months. Restricted stock units generally vest ratably in three equal installments on the first, second and third anniversaries of the grant date.      
Number of vesting installments | installment       3      
Shares available for future issuance | shares       3.4      
2018 Plan | First Anniversary of Date of Grant              
SHARE-BASED COMPENSATION              
Vesting percentage of stock options       25.00%      
2018 Plan | Maximum              
SHARE-BASED COMPENSATION              
Number of shares authorized for issuance | shares     1.4        
Maximum contractual term of stock options       10 years      
2020 Plan              
SHARE-BASED COMPENSATION              
Number of additional shares authorized for issuance | shares 0.6 0.5          
Number of shares granted | shares       0.7      
Shares available for future issuance | shares       0.9      
2020 Plan | Maximum              
SHARE-BASED COMPENSATION              
Number of shares authorized for issuance | shares             0.4