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FAIR VALUE MEASUREMENTS AND INVESTMENTS - Investments (Details) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Roll forward of investments |  |  |
Beginning balance | $ 42,907 | $ 38,169 | $ 38,169
Income recognized | 242 | 2,752 |
Contributions / (distributions) | (602) | 488 |
Sale of Investments | (790) |  |
Foreign currency gain |  | 229 |
Reclassification of foreign currency losses |  | 1,349 |
Ending balance | 41,757 | 42,987 | 42,907
Investments without a readily determinable fair value |  |  |
Roll forward of investments |  |  |
Beginning balance | 41,710 | 22,590 | 22,590
Income recognized | 47 | 2,430 |
Contributions / (distributions) |  | 425 |
Transfers |  | 16,264 | 16,300
Ending balance | 41,757 | 41,709 | 41,710
Fair value investments |  |  |
Roll forward of investments |  |  |
Beginning balance | 1,197 | 1,616 | 1,616
Income recognized | 195 | 229 |
Contributions / (distributions) | (602) | (567) |
Sale of Investments | $ (790) |  |
Ending balance |  | 1,278 | 1,197
Equity method investments |  |  |
Roll forward of investments |  |  |
Beginning balance |  | 13,963 | $ 13,963
Income recognized |  | 93 |
Contributions / (distributions) |  | 630 |
Foreign currency gain |  | 229 |
Reclassification of foreign currency losses |  | 1,349 |
Transfers |  | $ (16,264) |

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