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STOCK-BASED COMPENSATION - Narrative (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total compensation cost related to unvested stock options and RSU $ 13,300,000    
Weighted-average period of unvested stock options and RSU 1 year 10 months 24 days    
Capitalized stock-based employee compensation expense $ 0 $ 0 $ 0
Weighted-average estimated fair value per share of options granted (in dollars per share) $ 1.53 $ 3.73 $ 7.34
Issuance of common stock under employee stock purchase plan (in shares) 1,346,849 576,950 433,107
Stock issued under employee stock purchase plans, average exercise price (in dollars per share) $ 0.69 $ 3.07 $ 7.78
Weighted-average estimated fair value of shares purchased under ESPP plan (in dollars per share) $ 0.91 $ 1.85 $ 4.48
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total compensation cost related to unvested stock options and RSU $ 14,400,000    
Weighted-average period of unvested stock options and RSU 1 year 8 months 12 days