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MARKETABLE SECURITIES - Schedule of Marketable Securities (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2023 | Sep. 30, 2023 | Sep. 30, 2022 | Dec. 31, 2022
Marketable Debt Securities and Convertible Note |  |  |  |
Cost Basis |  |  |  | $ 11,435
Gross Unrealized Losses |  |  |  | (310)
Gross Unrealized Gains |  |  |  | 0
Fair Value |  |  |  | 11,125
Marketable equity securities |  |  |  |
Cost Basis | $ 2,876 | $ 2,876 |  | 2,876
Gross Unrealized Losses | (1,671) | (1,671) |  | (1,809)
Gross Unrealized Gains | 0 | 0 |  | 0
Fair Value | 1,205 | 1,205 |  | 1,067
Cost Basis | 111,495 | 111,495 |  | 14,311
Gross Unrealized Losses | 1,671 | 1,671 |  | 2,119
Gross Unrealized Gains | 7,409 | 7,409 |  | 0
Fair Value | 117,233 | 117,233 |  | $ 12,192
Proceeds from convertible note redemption | 20,000 | 20,000 | $ 0 |
Marketable Debt Securities |  |  |  |
Marketable Debt Securities and Convertible Note |  |  |  |
Cost Basis | 68,981 | 68,981 |  |
Gross Unrealized Losses | 0 | 0 |  |
Gross Unrealized Gains | 437 | 437 |  |
Fair Value | 69,418 | 69,418 |  |
Convertible Note |  |  |  |
Marketable Debt Securities and Convertible Note |  |  |  |
Cost Basis | 39,638 | 39,638 |  |
Gross Unrealized Losses | 0 | 0 |  |
Gross Unrealized Gains | 6,972 | 6,972 |  |
Fair Value | $ 46,610 | $ 46,610 |  |

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