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INVESTMENTS AND FAIR VALUE HIERARCHY (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Sep. 08, 2021
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2021
Dec. 01, 2020
Business Acquisition [Line Items]          
Decrease (increase) in fair value of investments   $ (27,027) $ (22,441)    
Variable Interest Entity, Not Primary Beneficiary | AVCT Investment          
Business Acquisition [Line Items]          
Equity interest   10.00%   15.00%  
Disposal Group, Disposed of by Sale, Not Discontinued Operations          
Business Acquisition [Line Items]          
Interest rate         10.00%
Loss partially offset principal of the debentures     1,500    
Debt conversion, converted instrument, shares issued (in shares) 13,700,421        
Number of shares of common stock entitled from warrants (in shares) 4,377,800        
Exercise price of warrants (in dollars per share) $ 0.01        
Fair value of AVCT units   $ 16,900   $ 43,900  
Decrease (increase) in fair value of investments   $ (27,000) $ 23,900