v3.22.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Loss per share (Details) - shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES    
Warrants 1,868,225 2,055,437
Rights   138,394
Options 86,011  
RSUs 1,955,240 1,711,736
Total 3,909,476 3,905,567