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MARKETABLE SECURITIES - Activity in Investments (Details) - USD ($) $ in Thousands | 6 Months Ended
--- | ---
Jun. 30, 2024 | Jun. 30, 2023
Investments rollforward |  |
Opening balance |  | $ 1,295
Additions/transfers during the period |  | 26,855
Disposals/transfers during period |  | (162)
Unrealized gain on securities held | $ 284 | 3,010
Unrealized foreign exchange loss on securities held |  | (1,810)
Ending balance |  | 29,188
Marketable equity securities |  |
Investments rollforward |  |
Opening balance | 1,743 | 1,133
Additions/transfers during the period |  | 26,855
Disposals/transfers during period | (82) |
Unrealized gain on securities held | 284 | 3,010
Unrealized foreign exchange loss on securities held |  | (1,810)
Ending balance | $ 1,945 | 29,188
Warrants |  |
Investments rollforward |  |
Opening balance |  | 162
Disposals/transfers during period |  | $ (162)

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