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SUPPLEMENTAL FINANCIAL INFORMATION - Schedule of Other Nonoperating Income (Expense) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Unrealized gain (loss) on investments | $ 15,472 |  |
Realized loss on investments | (10,491) | $ 0 | $ 0
Unrealized gain (loss) on marketable securities | (530) | (456) | 795
Realized gain on marketable securities | 1,141 | 0 | 0
Realized gain on convertible note redemptions and sale | 1,430 | 0 | 0
Change in value of warrant liabilities | 0 | 0 | (8,078)
Foreign exchange gain (loss) | 423 | 2,058 | (128)
Department of Energy awards | 0 | 0 | 1,900
Interest income, net and other | 5,697 | (166) | 340
Other income (loss) | $ 13,142 | $ (15,372) | $ 1,140

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