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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)