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EQUITY INVESTMENTS - Non-equity method (Details) - USD ($) $ in Thousands |  | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Sep. 08, 2023 | Dec. 31, 2022 | Mar. 31, 2024 | Dec. 31, 2023 | Aug. 22, 2023
Equity securities without readily determinable fair value |  |  |  |  |
Equity securities |  |  | $ 92,541 | $ 92,541 |
Infinitum Electric |  |  |  |  |
Equity securities without readily determinable fair value |  |  |  |  |
Contributions | $ 24,600 | $ 42,000 |  |  |
Ascend |  |  |  |  |
Equity securities without readily determinable fair value |  |  |  |  |
Equity securities |  |  |  |  | $ 25,000

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