PROPERTY, PLANT AND EQUIPMENT AND MINERAL PROPERTIES (Tables)

12 Months Ended

Dec. 31, 2023

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

The following is a summary of property, plant and equipment, net:

	Estimated	December 31,
	Useful Lives	2023		2022
Land	N/A	$	642	$	642
Plant facilities	12 - 15 years	29,750		29,509
Mining equipment	5 years	13,019		10,560
Light trucks and utility vehicles	5 years	3,256		2,867
Office furniture and equipment	4 - 7 years	1,754		1,585
Construction-in-progress	N/A	13,627		673
Total property, plant and equipment		$	62,048	$	45,836
Less: accumulated depreciation		(35,925)		(33,174)
Property, plant and equipment, net		$	26,123	$	12,662

As of December 31, 2022, the net book value of the property, plant and equipment attributable Alta Mesa, which the Company sold to enCore effective February 14, 2023, was $8.21 million and is included in Property, plant and equipment and other assets held for sale, net on the Consolidated Balance Sheet.

Schedule of Summary of Mineral Properties

The following is a summary of mineral properties:

	December 31,
	2023		2022
Sheep Mountain	$	34,183	$	34,183
Bahia Project	29,130		—
Nichols Ranch ISR Project	25,974		25,974
Roca Honda	22,095		22,095
Pinyon Plain	6,512		—
Other	1,687		1,287
Mineral properties total	$	119,581	$	83,539