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EXPLORATION, EVALUATION AND PRE-DEVELOPMENT (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development $ 38,809 $ 10,477
Exploration, evaluation and pre-development properties    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 38,809 10,477
Exploration, evaluation and pre-development properties | Drilling    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 26,117 5,812
Exploration, evaluation and pre-development properties | Assays    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 3,998 282
Exploration, evaluation and pre-development properties | Salaries and benefits    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 2,106 890
Exploration, evaluation and pre-development properties | Field support    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 2,861 1,670
Exploration, evaluation and pre-development properties | Operating supplies    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 1,313 210
Exploration, evaluation and pre-development properties | Studies and permits    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 768 320
Exploration, evaluation and pre-development properties | Consulting and professional fees    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 760 735
Exploration, evaluation and pre-development properties | Claim Filing and Maintenance Fees    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 411 360
Exploration, evaluation and pre-development properties | Depreciation & amortization    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 475 198
Exploration, evaluation and pre-development properties | McCoy-Cove, Nevada    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 4,196 1,137
Exploration, evaluation and pre-development properties | Granite Creek, Nevada    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 13,578 8,423
Exploration, evaluation and pre-development properties | Ruby Hill, Nevada    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 19,552 825
Exploration, evaluation and pre-development properties | Buffalo Mountain, Nevada    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development 1,483 0
Exploration, evaluation and pre-development properties | Other    
Exploration and Evaluation [Line Items]    
Total exploration, evaluation and pre-development $ 0 $ 92