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SHARE-BASED COMPENSATION - Fair Value Assumption for Stock Options (Details) - Options to purchase common stock - $ / shares
6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Expected term, in years 5 years 9 months 21 days 5 years 10 months 28 days
Expected volatility 88.00% 125.30%
Risk-free interest rate 2.12% 0.60%
Expected dividend yield 0.00% 0.00%
Weighted-average exercise price (in dollars per share) $ 16.17 $ 22.13