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SEGMENT REPORTING - Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
SEGMENT REPORTING |  |
Consolidated total assets | $ 146,357 | $ 149,831
Corporate And Other |  |
SEGMENT REPORTING |  |
Consolidated total assets | 4,887 | 12,195
Battery-grade graphite business | Operating Segment |  |
SEGMENT REPORTING |  |
Consolidated total assets | 141,470 | 137,636
Expenditures for battery-grade graphite business segment assets | $ 6,138 | $ 58,295

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