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Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Information About Reportable Segments (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Total sales | $ 720,227 | $ 718,905 | $ 807,473
Income (loss) from operations | (44,674) | (12,438) | 83,420
Capital additions (excluding non-cash items) | 223,887 | 149,378 | 109,048
Depreciation, depletion and amortization | 148,774 | 143,938 | 171,793
Other significant non-cash items | 42,930 | 10,716 | (6,305)
Identifiable assets | 3,011,104 | 2,927,172 | 2,728,808
Greens Creek [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total sales | 384,504 | 335,062 | 384,843
Income (loss) from operations | 113,551 | 87,297 | 164,666
Capital additions (excluding non-cash items) | 43,542 | 36,898 | 23,883
Depreciation, depletion and amortization | 53,995 | 48,911 | 48,710
Other significant non-cash items | 11,098 | 2,821 | 3,653
Identifiable assets | 569,369 | 582,687 | 589,944
Lucky Friday [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total sales | 116,284 | 147,814 | 131,488
Income (loss) from operations | 4,811 | 27,636 | 31,683
Capital additions (excluding non-cash items) | 65,337 | 50,992 | 29,885
Depreciation, depletion and amortization | 24,325 | 33,704 | 26,846
Other significant non-cash items | (916) | 1,138 | 1,048
Identifiable assets | 578,110 | 571,510 | 516,545
Keno Hill [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total sales | 35,518 | 0 | 0
Income (loss) from operations | (35,344) | (4,249) | 0
Capital additions (excluding non-cash items) | 44,672 | 19,725 | 0
Depreciation, depletion and amortization | 4,277 | 0 | 0
Other significant non-cash items | 376 | 1,669 | 0
Identifiable assets | 362,986 | 276,096 | 0
Casa Berardi [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total sales | 177,678 | 235,136 | 245,152
Income (loss) from operations | (56,683) | (21,799) | 5,807
Capital additions (excluding non-cash items) | 70,056 | 39,667 | 49,617
Depreciation, depletion and amortization | 66,037 | 60,962 | 80,744
Other significant non-cash items | 13,378 | 1,520 | 1,284
Identifiable assets | 683,035 | 681,631 | 701,868
Other Segments [Member] |  |  |
Segment Reporting Information [Line Items] |  |  |
Total sales | 6,243 | 893 | 45,990
Income (loss) from operations | (71,009) | (101,323) | (118,736)
Capital additions (excluding non-cash items) | 280 | 2,096 | 5,663
Depreciation, depletion and amortization | 140 | 361 | 15,493
Other significant non-cash items | 18,994 | 3,568 | (12,290)
Identifiable assets | $ 817,604 | $ 815,248 | $ 920,451

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