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v3.26.1

Property, plant, and equipment and assets held-for-sale, net - Schedule of Components of Plant and Equipment, Net (Details) - USD ($) $ in Thousands | Jun. 30, 2026 | Dec. 31, 2025
--- | --- | ---
Property, Plant, and Equipment [Line Items] |  |
Property, plant and equipment, gross | $ 88,905 | $ 88,441
Less, accumulated depreciation and amortization | (38,766) | (38,329)
Total property, plant, and equipment, net | 50,139 | 50,112
Assets held-for-sale | 2,893 | 2,893
Total | 53,032 | 53,005
Process equipment |  |
Property, Plant, and Equipment [Line Items] |  |
Property, plant and equipment, gross | 18,065 | 18,029
Production leach pads |  |
Property, Plant, and Equipment [Line Items] |  |
Property, plant and equipment, gross | $ 11,190 | 11,190
Buildings and leasehold improvements |  |
Property, Plant, and Equipment [Line Items] |  |
Depreciation Life or Method | 10 years |
Property, plant and equipment, gross | $ 9,189 | 9,536
Test leach pads |  |
Property, Plant, and Equipment [Line Items] |  |
Depreciation Life or Method | 18 months |
Property, plant and equipment, gross | $ 6,241 | 6,241
Mine equipment |  |
Property, Plant, and Equipment [Line Items] |  |
Property, plant and equipment, gross | 5,191 | 5,143
Vehicles |  |
Property, Plant, and Equipment [Line Items] |  |
Property, plant and equipment, gross | $ 1,854 | 1,854
Furniture and office equipment |  |
Property, Plant, and Equipment [Line Items] |  |
Depreciation Life or Method | 7 years |
Property, plant and equipment, gross | $ 1,219 | 1,141
Mineral properties |  |
Property, Plant, and Equipment [Line Items] |  |
Property, plant and equipment, gross | 50 | 50
Construction in progress and other |  |
Property, Plant, and Equipment [Line Items] |  |
Property, plant and equipment, gross | $ 35,906 | $ 35,257
Minimum | Process equipment |  |
Property, Plant, and Equipment [Line Items] |  |
Depreciation Life or Method | 5 years |
Minimum | Mine equipment |  |
Property, Plant, and Equipment [Line Items] |  |
Depreciation Life or Method | 5 years |
Minimum | Vehicles |  |
Property, Plant, and Equipment [Line Items] |  |
Depreciation Life or Method | 3 years |
Maximum | Process equipment |  |
Property, Plant, and Equipment [Line Items] |  |
Depreciation Life or Method | 15 years |
Maximum | Mine equipment |  |
Property, Plant, and Equipment [Line Items] |  |
Depreciation Life or Method | 7 years |
Maximum | Vehicles |  |
Property, Plant, and Equipment [Line Items] |  |
Depreciation Life or Method | 5 years |

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