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FAIR VALUE MEASUREMENT - Marketable securities (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
FAIR VALUE MEASUREMENT |  |  |
Equity securities | $ 18,289 | $ 15,190 |
Fair value losses | 616 | 2,826 | $ 418
Amount of shares carried at fair value | 21,034 | 22,869 |
Unrealized gains | 1,515 | 15,500 |
Carried at fair value | 10,723 | 4,134 |
Unrealized gain (loss) | 2,223 | (3,487) |
Held-for-trading debt securities | $ 64,650 | $ 0 |

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