v3.26.1
SEGMENT INFORMATION (Details)
$ in Thousands
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
segment
Jun. 30, 2025
USD ($)
Dec. 31, 2025
USD ($)
Segment Reporting [Abstract]          
Number of operating segments | segment     4    
Number of reportable segments | segment     4    
Segment Reporting [Line Items]          
Revenue $ 24,348 $ 27,836 $ 76,738 $ 41,884  
Pre-development, evaluation and exploration (29,264) (9,045) (54,962) (18,590)  
Property maintenance (4,423) (3,166) (8,988) (7,313)  
Adjusted income (loss) from operations (23,887) (9,652) (34,934) (19,519)  
Depreciation, depletion and amortization (573) (547) (1,055) (923)  
Royalties (609) (1,214) (3,264) (1,757)  
General and administrative (9,065) (7,338) (16,697) (12,328)  
Loss from operations (34,134) (18,751) (55,950) (34,527)  
Capital expenditures     33,396   $ 15,286
Total assets 1,173,837   1,173,837   703,420
Operating Segments | Granite Creek          
Segment Reporting [Line Items]          
Revenue 9,355 19,727 53,194 28,422  
Costs applicable to sales (7,106) (22,067) (37,835) (30,386)  
Pre-development, evaluation and exploration (7,883) (5,949) (19,278) (9,719)  
Property maintenance (180) (130) (398) (276)  
Adjusted income (loss) from operations (5,814) (8,419) (4,317) (11,959)  
Capital expenditures     13,713   5,045
Total assets 149,267   149,267   126,806
Operating Segments | Ruby Hill          
Segment Reporting [Line Items]          
Revenue 3,102 2,288 4,767 3,678  
Costs applicable to sales (2,639) (1,726) (3,552) (2,808)  
Pre-development, evaluation and exploration (20,083) (1,898) (32,466) (5,089)  
Property maintenance (1,228) (519) (2,508) (1,356)  
Adjusted income (loss) from operations (20,848) (1,855) (33,759) (5,575)  
Capital expenditures     3,639   2,314
Total assets 123,866   123,866   120,809
Operating Segments | Lone Tree          
Segment Reporting [Line Items]          
Revenue 11,891 5,821 18,777 9,784  
Costs applicable to sales (4,803) (1,484) (6,335) (2,306)  
Pre-development, evaluation and exploration (42) (10) (233) (33)  
Property maintenance (2,683) (2,170) (5,333) (4,918)  
Adjusted income (loss) from operations 4,363 2,157 6,876 2,527  
Capital expenditures     15,781   7,927
Total assets 253,651   253,651   240,986
Operating Segments | Cove          
Segment Reporting [Line Items]          
Revenue 0 0 0 0  
Costs applicable to sales 0 0 0 0  
Pre-development, evaluation and exploration (1,246) (1,174) (2,965) (3,721)  
Property maintenance (195) (194) (423) (407)  
Adjusted income (loss) from operations (1,441) (1,368) (3,388) (4,128)  
Capital expenditures     263   0
Total assets 53,490   53,490   53,307
Corporate and other          
Segment Reporting [Line Items]          
Revenue 0 0 0 0  
Costs applicable to sales 0 0 0 0  
Pre-development, evaluation and exploration (10) (14) (20) (28)  
Property maintenance (137) (153) (326) (356)  
Adjusted income (loss) from operations (147) $ (167) (346) $ (384)  
Capital expenditures     0   0
Total assets $ 593,563   $ 593,563   $ 161,512