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OTHER INCOME (EXPENSE) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Other Income and Expenses [Abstract] |  |  |  |
Interest income | $ 7,271 | $ 2,234 | $ 14,917 | $ 3,799
Gain (loss) on investments and marketable securities sales | 6,550 | 3,929 | 11,402 | 5,586
Change in fair value of marketable securities | (746) | (2,876) | 1,120 | (3,799)
Gain (loss) on sale of mineral properties, plant, and equipment | (810) | (757) | (1,050) | (1,341)
Other | 104 | (4,925) | (968) | (7,007)
Total | $ 12,369 | $ (2,395) | $ 25,421 | $ (2,762)

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