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STOCK-BASED COMPENSATION - Assumptions Used to Assess Fair Value of Stock Options Granted (Details) - $ / shares
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
STOCK-BASED COMPENSATION    
Expected volatility 105.00% 113.00%
Expected term of options (years) 6 years 6 years
Risk-free interest rate 2.95% 0.82%
Weighted-average grant-date fair value $ 0.89 $ 3.28