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COMPENSATION ARRANGEMENTS - Schedule of Restricted Stock Units and Performance Share Unit Activity (Details) - $ / shares
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Restricted stock units      
Restricted Stock Units      
Beginning balance (in shares) 2,876,089    
Granted (in shares) 601,314    
Vested (in shares) (1,368,015)    
Forfeited (in shares) (1,363,548)    
Ending balance (in shares) 745,840 2,876,089  
Weighted- Average Grant Date Fair Value (per share)      
Weighted-average grant date fair value, beginning balance (in usd per share) $ 19.33    
Weighted-average grant date fair value, granted (in usd per share) 5.26 $ 16.95 $ 31.48
Weighted-average grant date fair value, vested (in usd per share) 19.04    
Weighted-average grant date fair value, forfeited (in usd per share) 15.72    
Weighted-average grant date fair value, ending balance (in usd per share) $ 10.61 $ 19.33  
Performance Share Units      
Restricted Stock Units      
Beginning balance (in shares) 17,269    
Granted (in shares) 506,324    
Vested (in shares) (17,269)    
Ending balance (in shares) 506,324 17,269  
Weighted- Average Grant Date Fair Value (per share)      
Weighted-average grant date fair value, beginning balance (in usd per share) $ 24.13    
Weighted-average grant date fair value, granted (in usd per share) 6.34    
Weighted-average grant date fair value, vested (in usd per share) 24.13    
Weighted-average grant date fair value, ending balance (in usd per share) $ 6.34 $ 24.13  
Maximum number of shares issuable (in shares) 759,486