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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, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | $ 929,925 |  | $ 720,227 |  | $ 718,905 |
Salaries, wages and other benefits | 202,078 |  | 187,124 |  | 172,024 |
Contractors | 86,927 |  | 58,107 |  | 75,966 |
Materials and consumables | 218,320 |  | 184,634 |  | 171,896 |
Product inventory change | (8,941) |  | 14,299 |  | (17,927) |
Other direct production costs | 78,822 |  | 72,945 |  | 59,152 |
Transfer to ramp-up and suspension costs | (28,961) | [1] | (58,605) | [2] | (2,300) | [3]
Depreciation, depletion and amortization | 183,470 |  | 148,774 |  | 143,938 |
Gross profit | 198,210 |  | 112,949 |  | 116,156 |
Other segment items | 91,934 | [4] | 157,623 | [5] | 128,594 | [6]
Income (loss) from operations | 106,276 |  | (44,674) |  | (12,438) |
Interest expense | (49,834) |  | (43,319) |  | (42,793) |
Fair value adjustments, net | (2,204) |  | 2,925 |  | (4,723) |
Foreign exchange gain (loss), net | 7,552 |  | (3,810) |  | 7,211 |
Other income | 4,426 |  | 5,883 |  | 7,829 |
Income (loss) before income and mining taxes | 66,216 |  | (82,995) |  | (44,914) |
Capital additions | 214,492 |  | 223,887 |  | 149,378 |
Identifiable assets | 2,981,060 |  | 3,011,104 |  | 2,927,172 |
Metal Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 909,369 |  | 714,944 |  | 718,432 |
Environmental Remediation Services [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 20,556 |  | 5,283 |  | 473 |
Intersegment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 3,834 |  | 0 |  | 0 |
Reconciliation of Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 933,759 |  | 720,227 |  | 718,905 |
Elimination of Intersegment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | (3,834) |  | 0 |  | 0 |
Greens Creek [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Salaries, wages and other benefits | 69,990 |  | 68,183 |  | 64,142 |
Contractors | 6,135 |  | 5,917 |  | 7,550 |
Materials and consumables | 93,223 |  | 89,850 |  | 81,538 |
Product inventory change | 5,858 |  | 4,266 |  | (5,885) |
Other direct production costs | 39,471 |  | 37,684 |  | 36,462 |
Transfer to ramp-up and suspension costs | 0 | [1] | 0 | [2] | 0 | [3]
Depreciation, depletion and amortization | 53,450 |  | 53,995 |  | 48,911 |
Gross profit | 153,447 |  | 124,609 |  | 102,344 |
Capital additions | 47,795 |  | 43,542 |  | 36,898 |
Identifiable assets | 564,334 |  | 569,369 |  | 582,687 |
Greens Creek [Member] | Metal Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 421,574 |  | 384,504 |  | 335,062 |
Greens Creek [Member] | Environmental Remediation Services [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 0 |  | 0 |  | 0 |
Greens Creek [Member] | Intersegment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 0 |  | 0 |  | 0 |
Greens Creek [Member] | Reconciliation of Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 421,574 |  | 384,504 |  | 335,062 |
Greens Creek [Member] | Elimination of Intersegment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 0 |  |  |  |  |
Lucky Friday [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Salaries, wages and other benefits | 52,879 |  | 43,142 |  | 42,155 |
Contractors | 14,154 |  | 8,681 |  | 11,384 |
Materials and consumables | 39,957 |  | 27,030 |  | 29,868 |
Product inventory change | (2,628) |  | 8,014 |  | (2,302) |
Other direct production costs | 1,281 |  | (1,460) |  | 1,789 |
Transfer to ramp-up and suspension costs | (2,207) | [1] | (25,548) | [2] | 0 | [3]
Depreciation, depletion and amortization | 41,049 |  | 24,325 |  | 33,704 |
Gross profit | 58,669 |  | 32,100 |  | 31,216 |
Capital additions | 49,592 |  | 65,337 |  | 50,992 |
Identifiable assets | 587,945 |  | 578,110 |  | 571,510 |
Lucky Friday [Member] | Metal Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 203,154 |  | 116,284 |  | 147,814 |
Lucky Friday [Member] | Environmental Remediation Services [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 0 |  | 0 |  | 0 |
Lucky Friday [Member] | Intersegment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 0 |  | 0 |  | 0 |
Lucky Friday [Member] | Reconciliation of Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 203,154 |  | 116,284 |  | 147,814 |
Lucky Friday [Member] | Elimination of Intersegment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 0 |  |  |  |  |
Keno Hill [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Salaries, wages and other benefits | 29,658 |  | 21,569 |  | 863 |
Contractors | 22,960 |  | 10,472 |  | 482 |
Materials and consumables | 28,648 |  | 18,018 |  | 459 |
Product inventory change | (8,902) |  | (1,163) |  | (0) |
Other direct production costs | 13,216 |  | 12,138 |  | 496 |
Transfer to ramp-up and suspension costs | (26,754) | [1] | (29,793) | [2] | (2,300) | [3]
Depreciation, depletion and amortization | 16,136 |  | 4,277 |  | 0 |
Gross profit | 0 |  | 0 |  | 0 |
Capital additions | 54,869 |  | 44,672 |  | 19,725 |
Identifiable assets | 413,982 |  | 362,986 |  | 276,096 |
Keno Hill [Member] | Metal Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 74,962 |  | 35,518 |  | 0 |
Keno Hill [Member] | Environmental Remediation Services [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 0 |  | 0 |  | 0 |
Keno Hill [Member] | Intersegment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 3,834 |  | 0 |  | 0 |
Keno Hill [Member] | Reconciliation of Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 78,796 |  | 35,518 |  | 0 |
Keno Hill [Member] | Elimination of Intersegment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | (3,834) |  |  |  |  |
Casa Berardi [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Salaries, wages and other benefits | 49,345 |  | 51,201 |  | 58,678 |
Contractors | 23,982 |  | 31,912 |  | 52,715 |
Materials and consumables | 55,867 |  | 48,130 |  | 54,896 |
Product inventory change | (3,269) |  | 2,913 |  | (186) |
Other direct production costs | 24,854 |  | 23,376 |  | 21,833 |
Transfer to ramp-up and suspension costs | 0 | [1] | (2,228) | [2] | 0 | [3]
Depreciation, depletion and amortization | 72,835 |  | 66,037 |  | 60,962 |
Gross profit | (13,935) |  | (43,663) |  | (13,762) |
Capital additions | 60,704 |  | 70,056 |  | 39,667 |
Identifiable assets | 687,080 |  | 683,035 |  | 681,631 |
Casa Berardi [Member] | Metal Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 209,679 |  | 177,678 |  | 235,136 |
Casa Berardi [Member] | Environmental Remediation Services [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 0 |  | 0 |  | 0 |
Casa Berardi [Member] | Intersegment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 0 |  | 0 |  | 0 |
Casa Berardi [Member] | Reconciliation of Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 209,679 |  | 177,678 |  | 235,136 |
Casa Berardi [Member] | Elimination of Intersegment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 0 |  |  |  |  |
Other Operating Segment [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Salaries, wages and other benefits | 206 |  | 3,029 |  | 6,186 |
Contractors | 19,696 |  | 1,125 |  | 3,835 |
Materials and consumables | 625 |  | 1,606 |  | 5,135 |
Product inventory change | 0 |  | 269 |  | (9,554) |
Other direct production costs | 0 |  | 1,207 |  | (1,428) |
Transfer to ramp-up and suspension costs | 0 | [1] | (1,036) | [2] | 0 | [3]
Depreciation, depletion and amortization | 0 |  | 140 |  | 361 |
Gross profit | 29 |  | (97) |  | (3,642) |
Capital additions | 1,532 |  | 280 |  | 2,096 |
Identifiable assets | 727,719 |  | 817,604 |  | 815,248 |
Other Operating Segment [Member] | Metal Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 0 |  | 960 |  | 420 |
Other Operating Segment [Member] | Environmental Remediation Services [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 20,556 |  | 5,283 |  | 473 |
Other Operating Segment [Member] | Intersegment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 0 |  | 0 |  | 0 |
Other Operating Segment [Member] | Reconciliation of Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | 20,556 |  | $ 6,243 |  | $ 893 |
Other Operating Segment [Member] | Elimination of Intersegment Sales [Member] |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Total consolidated sales | $ 0 |  |  |  |  |
[1] | Total cost of sales in excess of sales value are transferred to ramp-up and suspension costs.
[2] | Total cost of sales in excess of sales value are transferred to ramp-up and suspension costs.
[3] | Total cost of sales in excess of sales value are transferred to ramp-up and suspension costs.
[4] | Other operating expense items include general and administrative, exploration and pre-development, ramp-up and suspension costs, provision for closed operations and environmental matters, write-down of property, plant and equipment and other operating (income) expense, net.
[5] | Other operating expense items include general and administrative, exploration and pre-development, ramp-up and suspension costs, provision for closed operations and environmental matters, write-down of property, plant and equipment and other operating (income) expense, net.
[6] | Other operating expense items include general and administrative, exploration and pre-development, ramp-up and suspension costs, provision for closed operations and environmental matters, write-down of property, plant and equipment and other operating (income) expense, net.

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