Quarterly report pursuant to Section 13 or 15(d)

SHARE BASED COMPENSATION - Compensation Expenses (Details)

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SHARE BASED COMPENSATION - Compensation Expenses (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Compensation expense $ 487 $ 199 $ 830 $ 323
Stock options        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Compensation expense 302 133 520 236
Restricted stocks and Performance-based shares        
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]        
Compensation expense $ 185 $ 66 $ 310 $ 87