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STOCK-BASED COMPENSATION - Schedule of Restricted Stock Activity (Details) - Unvested restricted stock - $ / shares
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Number of shares    
Unvested restricted common stock, beginning balance (in shares) 54,336 0
Granted (in shares) 10,000 61,000
Vested (in shares) (27,002) (6,664)
Cancelled or forfeited (in shares) (6,667)  
Unvested restricted common stock, ending balance (in shares) 30,667 54,336
Weighted average grant date fair value    
Unvested restricted common stock, beginning balance (in dollars per share) $ 29.68 $ 0
Granted (in dollars per share) 28.69 29.65
Vested (in dollars per share) 26.46 30.00
Cancelled or forfeited (in dollars per share) 1.21  
Unvested restricted common stock, ending balance (in dollars per share) $ 29.53 $ 29.68