REPORTING SEGMENTS AND RELATED INFORMATION - Schedule of Revenue Components of Mineral Resources Segment (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue from External Customer [Line Items]
Total expenses	$ 10,172	$ 20,487	$ 29,919	$ 47,882
Operating results	37	10,988	(1,347)	13,882
Mineral resources | Operating Segments
Revenue from External Customer [Line Items]
Revenues	3,118	3,139	11,630	19,238
Total expenses	2,000	1,745	6,991	11,347
Operating results	$ 1,118	$ 1,394	$ 4,639	$ 7,891