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PLANT AND EQUIPMENT AND MINERAL PROPERTIES (Tables) | 9 Months Ended
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Sep. 30, 2023
Property, Plant and Equipment [Abstract] |
Schedule of Property, Plant and Equipment | The following is a summary of property, plant and equipment, net:
| September 30, 2023 |  | December 31, 2022
| Cost |  | Accumulated Depreciation |  | Net Book Value |  | Cost |  | Accumulated Depreciation |  | Net Book Value
Property, plant and equipment |  |  |  |  |  |  |  |  |  |  |
Nichols Ranch | $ | 29,210 |  |  | $ | (21,747) |  |  | $ | 7,463 |  |  | $ | 29,210 |  |  | $ | (20,221) |  |  | $ | 8,989 |
Pinyon Plain | 3,288 |  |  | (846) |  |  | 2,442 |  |  | 1,617 |  |  | (714) |  |  | 903 |
Equipment and other | 22,895 |  |  | (12,592) |  |  | 10,303 |  |  | 15,009 |  |  | (12,239) |  |  | 2,770 |
Property, plant and equipment total | $ | 55,393 |  |  | $ | (35,185) |  |  | $ | 20,208 |  |  | $ | 45,836 |  |  | $ | (33,174) |  |  | $ | 12,662 |
As of December 31, 2022, the net book value of the property, plant and equipment attributable to the Alta Mesa ISR Project “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 Condensed Consolidated Balance Sheets.
Schedule of Summary of Mineral Properties | The following is a summary of mineral properties:
| September 30, 2023 |  | December 31, 2022
Mineral properties |  |  |
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 | 4,427 |  |  | — |
Other | 1,287 |  |  | 1,287 |
Mineral properties total | $ | 117,096 |  |  | $ | 83,539 |

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- Definition Tabular disclosure of physical assets used in the normal conduct of business and not intended for resale. Includes, but is not limited to, balances by class of assets, depreciation and depletion expense and method used, including composite depreciation, and accumulated deprecation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 1 -SubTopic 10 -Topic 360 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482099/360-10-50-1 + Details
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