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Plant and Equipment, Net (Tables)
 12 Months Ended
Dec. 31, 2022
Property, Plant and Equipment [Abstract]  
Schedule of Components of Plant and Equipment, Net
The following table provides the components of Plant and equipment, net (dollars in thousands):
Year Ended December 31,
Depreciation Life
or Method		20222021
Production leach padsUnits-of-production$11,190 $11,190 
Test leach pads18 months6,241 6,241 
Process equipment
5 - 15 years
17,302 17,735 
Buildings and leasehold improvements
10 years
9,280 9,280 
Mine equipment
5 - 7 years
4,872 6,224 
Vehicles
3 - 5 years
1,578 1,454 
Furniture and office equipment
7 years
370 330 
Construction in progress and other35,721 35,794 
$86,554 $88,248 
Less, accumulated depreciation and amortization(31,722)(29,764)
Total$54,832 $58,484