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STOCK-BASED COMPENSATION - Narrative (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 01, 2022
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Jan. 14, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation cost, options   $ 19,145   $ 19,145    
Stock-based compensation expense   2,664 $ 3,009 $ 9,291 $ 10,661  
2020 Stock Option Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Increase of authorized shares, percent of common stock outstanding 4.00%         4.00%
Number of additional shares authorized (in shares) 1,449,384          
2020 ESPP            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Increase of authorized shares, percent of common stock outstanding           1.00%
Number of additional shares authorized (in shares) 326,364          
Stock options            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation cost, recognition period (in years)       2 years 1 month 6 days    
Stock-based compensation expense   2,481 2,783 $ 8,674 9,793  
Stock options | 2020 Stock Option Plan            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares issued under share-based compensation plan       57,387    
Restricted stock units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Unrecognized compensation cost, recognition period (in years)       1 year 2 months 12 days    
Fair value of units vested       $ 453    
Unrecognized compensation cost   515   515    
Stock-based compensation expense   $ 108 $ 134 $ 418 $ 694  
Performance Restricted Stock Units            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Granted (in shares)       0    
Forfeited (in shares)   18,900        
Units outstanding (in shares)   248,225   248,225    
Stock-based compensation expense       $ 0    
Shares issuable under employee stock purchase plan | 2020 ESPP            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Shares issued under share-based compensation plan       53,662 6,162  
Award purchase period (in months)       6 months    
Maximum percent of fair market value of common stock       85.00%    
Maximum employee subscription rate   10.00%   10.00%    
Maximum employee subscription amount       $ 25