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STOCK-BASED COMPENSATION - Narrative (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Granted (in shares)       0    
Weighted average remaining contractual term (years), outstanding       6 years 3 months 29 days   6 years 4 months 24 days
Stock options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unamortized share-based compensation cost related to unvested stock option awards   $ 9.4   $ 9.4    
Expected period for recognition       2 years 2 months 12 days    
Share-based Payment Arrangement            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based compensation cost capitalized in inventory   0.9 $ 2.3 $ 0.9 $ 2.3  
Restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Award vesting period       4 years    
Award vesting percentage       25.00%    
Unrecognized compensation cost   $ 150.2   $ 150.2    
Weighted average remaining contractual term (years), outstanding       3 years 4 months 24 days    
Granted (in shares)       10,484,399    
Operations-Based Performance-Vesting RSUs            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Granted (in shares) 1,597,272     0    
2021 Stock Purchase Plan | Stock options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Annual percentage increase in shares available 5.00%          
Number of shares available for grant (in shares)   3,619,826   3,619,826    
2021 Stock Purchase Plan | Stock options | Maximum            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized (in shares) 22,399,691   22,399,691   22,399,691  
2021 Employee Stock Purchase Plan | Employee stock purchase plan – shares projected to be issued            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Number of shares authorized (in shares) 2,834,754   2,834,754   2,834,754  
Annual percentage increase in shares available 1.00%          
Number of shares available for grant (in shares)   4,151,321   4,151,321    
Annual increase, number of shares (in shares) 8,504,263   8,504,263   8,504,263  
Purchase price of common stock, percent 85.00%