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BORROWING (Details) - USD ($)
$ in Thousands
12 Months Ended
Mar. 31, 2020
Mar. 12, 2020
Dec. 31, 2020
Dec. 31, 2019
Disclosure of detailed information about borrowings [line items]        
Restricted cash     $ 16,164 $ 152
HCRM        
Disclosure of detailed information about borrowings [line items]        
Maturity term     6 years  
Term, no principal payments required     3 years  
Term, no principal payments if revenue targets unmet     2 years  
Percentage of principal amount of term loan being repaid or prepaid     4.00%  
HCRM | Period from January 1, 2021, to December 31, 2029        
Disclosure of detailed information about borrowings [line items]        
Percentage of royalty income on net revenues     4.00%  
HCRM | Period for trailing four quarters ending March 31, 2021        
Disclosure of detailed information about borrowings [line items]        
Interest rate (as a percent)     6.70%  
HCRM | Fixed rate | Period from January 1, 2021, to December 31, 2029        
Disclosure of detailed information about borrowings [line items]        
Interest rate (as a percent)     8.20%  
HCRM | Minimum        
Disclosure of detailed information about borrowings [line items]        
Restricted cash     $ 16,000  
HCRM | Maximum | Period from January 1, 2021, to December 31, 2029        
Disclosure of detailed information about borrowings [line items]        
Royalty income     $ 75,000  
HCRM | Weighted average        
Disclosure of detailed information about borrowings [line items]        
Interest rate (as a percent)     16.50%  
HCRM | Credit Agreement        
Disclosure of detailed information about borrowings [line items]        
Term loan received   $ 30,000    
HCRM | Credit Agreement, second tranche        
Disclosure of detailed information about borrowings [line items]        
Term loan received $ 50,000