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SEGMENT REPORTING - Assets (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Segment Reporting Information [Line Items] |  |
Fair Value | $ 63,068 | $ 61,608
Equity securities without readily determinable fair value | 5,816 | 5,816
Equity method investments | 30,934 | 30,934
Cost | 99,818 | 98,358
Other parent assets | 218,909 | 156,394
Total assets | 633,545 | 482,928
Intellectual property operations |  |
Segment Reporting Information [Line Items] |  |
Total assets | 234,254 | 176,119
Industrial operations |  |
Segment Reporting Information [Line Items] |  |
Total assets | 47,854 | 52,057
Energy operations |  |
Segment Reporting Information [Line Items] |  |
Total assets | $ 32,710 | $ 0

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