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STOCK-BASED COMPENSATION PLANS - Restricted Stock Awards and Units and Performance-Based Stock Units (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Weighted Average Grant Date Fair Value      
Total grant date fair value of shares that vested during the period $ 9,858 $ 40,751 $ 7,927
RSUs      
Shares      
Unvested balance at the beginning of the period (in shares) 5,389,611    
Granted (in shares) 6,096,248    
Vested (in shares) (3,075,543)    
Forfeited (in shares) (760,569)    
Unvested balance at the end of the period (in shares) 7,649,747 5,389,611  
Weighted Average Grant Date Fair Value      
Unvested balance at the beginning of the period (in dollars per share) $ 6.19    
Granted (in dollars per share) 3.09    
Vested (in dollars per share) 5.87    
Forfeited (in dollars per share) 5.05    
Unvested balance at end of the period (in dollars per share) $ 3.96 $ 6.19  
RSAs      
Weighted Average Grant Date Fair Value      
Total grant date fair value of shares that vested during the period $ 18,100 $ 12,500 11,200
PSUs      
Shares      
Unvested balance at the beginning of the period (in shares) 4,987,876    
Granted (in shares) 2,228,073    
Vested (in shares) (179,184)    
Forfeited (in shares) (383,262)    
Unvested balance at the end of the period (in shares) 6,653,503 4,987,876  
Weighted Average Grant Date Fair Value      
Unvested balance at the beginning of the period (in dollars per share) $ 2.87    
Granted (in dollars per share) 3.27    
Vested (in dollars per share) 5.02    
Forfeited (in dollars per share) 7.82    
Unvested balance at end of the period (in dollars per share) $ 2.52 $ 2.87  
Total grant date fair value of shares that vested during the period $ 900 $ 1,700 $ 1,800