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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 |  |

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