REPORTING SEGMENTS AND RELATED INFORMATION - Revenue Components of Mineral Resources Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenue from External Customer [Line Items]
Total expenses	$ 65,488	$ 55,873	$ 44,577
Operating Segments
Revenue from External Customer [Line Items]
Total revenues	79,217	55,613	37,830
Segment profits	23,428	9,583	2,683
Mineral resources | Operating Segments
Revenue from External Customer [Line Items]
Total revenues	21,595	20,987	10,736
Total expenses	12,969	13,559	6,414
Segment profits	$ 8,626	$ 7,428	$ 4,322