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DESCRIPTION OF BUSINESS AND BASIS OF PRESENTATION (Details)
$ in Thousands
 3 Months Ended
Jun. 10, 2020
Mar. 31, 2021
USD ($)
segment
Jan. 01, 2021
USD ($)
Dec. 31, 2020
USD ($)
Mar. 31, 2020
USD ($)
Dec. 31, 2019
USD ($)
Organization, Consolidation and Presentation of Financial Statements [Abstract]            
Number of operating segments | segment   2        
Stock split ratio, common stock 0.05          
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Stockholders' equity   $ 65,620   $ 107,674 $ 191,507 $ 395,046
Additional Paid-In Capital            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Stockholders' equity   $ 2,261,095   2,348,114 $ 2,323,217 [1] 2,310,393 [1]
Cumulative Effect, Period of Adoption, Adjustment            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Stockholders' equity       (18,969)   $ (79)
Cumulative Effect, Period of Adoption, Adjustment | Accounting Standards Update 2020-06            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Non-current liabilities     $ 19,000      
Cumulative Effect, Period of Adoption, Adjustment | Additional Paid-In Capital            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Stockholders' equity       $ (67,014)    
Cumulative Effect, Period of Adoption, Adjustment | Additional Paid-In Capital | Accounting Standards Update 2020-06            
New Accounting Pronouncements or Change in Accounting Principle [Line Items]            
Stockholders' equity     $ (67,000)      
[1] All share information and balances have been retroactively adjusted to reflect a reverse stock split. See Note 7, Stockholders' Equity and Compensation Arrangements, for additional information.