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STOCKHOLDERS' EQUITY AND COMPENSATION ARRANGEMENTS - Schedule of Restricted Stock Unit Activity (Details) - Restricted stock units
 6 Months Ended
Jun. 30, 2022
$ / shares
shares
Number of Shares  
Beginning balance (in shares) | shares 2,205,235
Granted (in shares) | shares 1,949,064
Vested (in shares) | shares (695,084)
Forfeited (in shares) | shares (275,517)
Ending balance (in shares) | shares 3,183,698
Weighted-Average Grant Date Fair Value (per unit)  
Beginning balance (in dollars per share) | $ / shares $ 31.06
Granted (in dollars per share) | $ / shares 20.17
Vested (in dollars per share) | $ / shares 35.85
Forfeited (in dollars per share) | $ / shares 30.70
Ending balance (in dollars per share) | $ / shares $ 23.33