Annual report pursuant to Section 13 and 15(d)

SHAREHOLDERS' EQUITY - Stock-based Compensation Expense (Details)

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SHAREHOLDERS' EQUITY - Stock-based Compensation Expense (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
SHAREHOLDERS' EQUITY    
Stock-based compensation expense recognized $ 1,400 $ 548
Unrecognized compensation cost $ 1,400  
Unvested stock options (in shares) 474,546  
Weighted-average remaining vesting period 3 years 9 months 18 days