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FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended 7 Months Ended 12 Months Ended
Dec. 31, 2021
Dec. 31, 2021
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Jan. 31, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Investment without readily determinable fair value             $ 5,000
Decrease in liability as a result of decreasing the profit element and risk premium input by 100 basis points     $ 900        
Increase in liability as a result of decreasing the discount rate by 100 basis points     2,900        
Decrease in liability as a result of increasing the discount rate by 100 basis points     2,300        
Debt Securities, One              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Investments in debt securities           $ 25,000  
Debt Securities, Two              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Investments in debt securities         $ 20,000    
Proceeds from settlement $ 26,600            
Principal amount settled 20,000            
Proceeds from interest and change in control premium   $ 6,600          
Debt Securities, Three              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Investments in debt securities       $ 13,000      
Level 2 | Recurring              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Investments in debt securities 0 0 0       $ 0
Level 2 | Recurring | Convertible Notes | Convertible Senior Notes Due 2028              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Notes payable fair value 594,400 594,400 594,400        
Level 2 | Recurring | Convertible Notes | Convertible Senior Notes Due 2026              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Notes payable fair value 642,300 642,300 642,300        
Level 2 | Recurring | Convertible Notes | Convertible Senior Notes Due 2025              
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]              
Notes payable fair value $ 240,000 $ 240,000 $ 240,000