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STOCK-BASED COMPENSATION - Restricted Stock Activity (Details) - $ / shares
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Restricted Stock    
Shares    
Unvested at beginning of period (in shares) 0 200
Granted (in shares) 0 0
Vested (in shares) 0 0
Forfeited and cancelled (in shares) 0 (200)
Unvested at end of period (in shares) 0 0
Weighted Average Grant Date Fair Value    
Unvested at beginning of period (in USD per share) $ 0 $ 14.72
Granted (in USD per share) 0 0
Vested (in USD per share) 0 0
Forfeited and cancelled (in USD per share) 0 14.72
Unvested at end of period (in USD per share) $ 0 $ 0
Restricted Stock Units (RSUs)    
Shares    
Unvested at beginning of period (in shares) 539,000 566,000
Granted (in shares) 136,000 202,000
Vested (in shares) (196,000) (145,000)
Forfeited and cancelled (in shares) (42,000) (42,000)
Unvested at end of period (in shares) 437,000 581,000
Weighted Average Grant Date Fair Value    
Unvested at beginning of period (in USD per share) $ 60.73 $ 52.66
Granted (in USD per share) 103.19 73.33
Vested (in USD per share) 57.30 51.08
Forfeited and cancelled (in USD per share) 67.72 61.17
Unvested at end of period (in USD per share) $ 74.79 $ 59.62