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Note 15 - Properties, Plants, Equipment and Mine Development, net, and Lease Commitments (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2024
Property, Plant and Equipment [Abstract] |
Schedule of properties, plants, equipment, and mine development |
|  | December 31, |
|  | 2024 |  |  | 2023 |
Mining properties, including asset retirement obligations |  | $ | 958,858 |  |  | $ | 911,018 |
Development costs |  |  | 671,741 |  |  |  | 630,391 |
Plants and equipment |  |  | 1,805,236 |  |  |  | 1,666,577 |
Land |  |  | 35,680 |  |  |  | 35,112 |
Mineral interests |  |  | 1,166,045 |  |  |  | 1,164,390 |
Construction in progress |  |  | 66,566 |  |  |  | 121,022 |
|  |  | 4,704,126 |  |  |  | 4,528,510 |
Less accumulated depreciation, depletion and amortization |  |  | 2,010,007 |  |  |  | 1,862,260 |
Net carrying value |  | $ | 2,694,119 |  |  | $ | 2,666,250 |

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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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