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SUBSEQUENT EVENTS (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended 9 Months Ended
Oct. 29, 2021
Sep. 30, 2021
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Subsequent Event [Line Items]              
Sale of stock, number of shares issued in transaction (in shares)         1,250,000    
Sale of stock, consideration received on transaction         $ 5,400    
Common stock, authorized (in shares)   36,525,154 36,525,154   36,525,154   31,525,154
Number of shares authorized for award (in shares)   20,803,838 20,803,838   20,803,838    
Stock-based compensation     $ 433 $ 111 $ 1,144 $ 281  
Restricted Stock Units, Service And Performance Based              
Subsequent Event [Line Items]              
Granted (in shares)         2,700,000    
2021 Stock Plan              
Subsequent Event [Line Items]              
Capital shares reserved for future issuance   3,640,000 3,640,000   3,640,000    
2021 Stock Plan | Employee Stock              
Subsequent Event [Line Items]              
Capital shares reserved for future issuance   607,000 607,000   607,000    
Number of additional shares authorized, annual percentage   1.00%          
Number of shares authorized for award (in shares)   5,000,000 5,000,000   5,000,000    
Subsequent Event              
Subsequent Event [Line Items]              
Common stock, authorized (in shares) 300,000,000            
Preferred stock, authorized (in shares) 10,000,000            
Subsequent Event | Restricted Stock Units, Service And Performance Based              
Subsequent Event [Line Items]              
Stock-based compensation $ 2,500            
Subsequent Event | IPO              
Subsequent Event [Line Items]              
Sale of stock, number of shares issued in transaction (in shares) 5,750,000            
Sale of stock (in dollars per share) $ 14.00            
Sale of stock, consideration received on transaction $ 71,100            
Common shares issued upon conversion (in shares) 4,471,316            
Subsequent Event | Over-Allotment Option              
Subsequent Event [Line Items]              
Sale of stock, number of shares issued in transaction (in shares) 750,000