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STOCK-BASED COMPENSATION - Black Scholes Pricing Model (Details)
6 Months Ended
Jun. 30, 2021
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Forfeiture Rate 0.00%
Minimum  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Expected volatility 69.18%
Expected term 4 years 5 months 26 days
Risk-free interest rate 0.32%
Maximum  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Expected volatility 81.11%
Expected term 5 years
Risk-free interest rate 1.39%