v3.26.1
Note 4 -Business Segments, Sales of Products and Significant Customers - Schedule of Information About Reportable Segments (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Segment Reporting [Line Items]          
Total consolidated sales $ 411,433 $ 205,334 $ 1,103,902 $ 720,246 $ 542,549
Salaries, wages and other benefits 50,180 39,559 168,079 152,733 135,923
Contractors 13,552 15,250 75,094 62,945 26,195
Materials and consumables 45,407 43,188 179,755 162,453 136,504
Product inventory change 1,872 (5,879) 152 (5,672) 11,386
Other direct production costs 13,399 14,719 44,233 49,100 41,523
Depreciation, depletion and amortization 33,768 29,816 126,784 115,503 89,747
Gross profit 253,255 68,681 509,805 183,184 101,271
Other segment items 30,148 [1] 21,276 [2] 113,396 [3] 59,422 [4],[5] 89,262 [4]
Income (loss) from operations 223,107 47,405 396,409 123,762 12,009
Interest expense 5,656 11,392 (40,991) (49,331) (43,065)
Fair value adjustments, net (5,945) 3,388 8,332 3,541 1,735
Foreign exchange (loss) gain, net 498 (367) (6,019) 8,063 (4,145)
Other income 3,549 942 (930) 4,169 5,465
Income (loss) before income and mining taxes 215,553 39,976 356,801 90,204 (28,001)
Capital additions 39,265 37,838 190,875 153,788 153,831
Identifiable assets 3,376,293   3,560,645 2,981,060  
Metal Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 406,781 198,246 1,064,784 699,690 537,266
Environmental Remediation Services [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 4,652 7,088 39,118 20,556 5,283
Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 1,639 986 6,123 3,834 0
Reconciliation of Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 413,072 206,320 1,110,025 724,080 542,549
Elimination of Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales (1,639) (986) (6,123) (3,834) 0
Continuing Operations [Member]          
Segment Reporting [Line Items]          
Identifiable assets     2,808,916 2,303,784 2,331,306
Operating Segments [Member]          
Segment Reporting [Line Items]          
Salaries, wages and other benefits   39,501 167,481 152,527 132,894
Contractors   8,319 37,799 43,249 25,070
Materials and consumables   43,082 179,076 161,828 134,898
Product inventory change   (5,879) 152 (5,672) 11,117
Other direct production costs   14,719 44,231 49,100 41,352
Depreciation, depletion and amortization   29,816 126,784 115,503 89,607
Gross profit   68,688 509,261 183,155 101,368
Capital additions   36,641 185,742 152,256 153,551
Identifiable assets     1,834,213 1,566,261 1,510,465
Operating Segments [Member] | Metal Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales   198,246 1,064,784 699,690 536,306
Operating Segments [Member] | Environmental Remediation Services [Member]          
Segment Reporting [Line Items]          
Total consolidated sales   0 0 0 0
Operating Segments [Member] | Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales   986 6,123 3,834 0
Operating Segments [Member] | Reconciliation of Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales   199,232 1,070,907 703,524 536,306
Operating Segments [Member] | Elimination of Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales   (986) (6,123) (3,834)  
Greens Creek [Member]          
Segment Reporting [Line Items]          
Salaries, wages and other benefits 20,582 18,253 75,888 69,990 68,183
Contractors 2,705 905 7,425 6,135 5,917
Materials and consumables 27,595 25,665 106,959 93,223 89,850
Product inventory change 5,383 901 1,258 5,858 4,266
Other direct production costs 10,110 10,325 42,691 39,471 37,684
Depreciation, depletion and amortization 15,983 13,589 55,960 53,450 53,995
Gross profit 168,641 48,505 322,646 153,447 124,609
Capital additions 6,113 10,759 54,617 47,795 43,542
Identifiable assets 707,216   640,011 564,334 569,369
Greens Creek [Member] | Metal Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 250,999 118,143 612,827 421,574 384,504
Greens Creek [Member] | Environmental Remediation Services [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 0 0 0 0 0
Greens Creek [Member] | Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 0 0 0 0 0
Greens Creek [Member] | Reconciliation of Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 250,999 118,143 612,827 421,574 384,504
Greens Creek [Member] | Elimination of Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales   0      
Lucky Friday [Member]          
Segment Reporting [Line Items]          
Salaries, wages and other benefits 20,523 14,776 63,134 52,879 43,142
Contractors 3,956 3,863 15,628 14,154 8,681
Materials and consumables 10,445 11,423 44,817 39,957 27,030
Product inventory change (293) 1,182 346 (2,628) 8,014
Other direct production costs 542 (620) (1,290) 657 (6,519)
Depreciation, depletion and amortization 13,609 13,425 51,055 41,673 29,384
Gross profit 60,574 19,145 132,950 56,462 6,552
Other segment items       2,207 25,548
Capital additions 17,018 15,446 72,933 49,592 65,337
Identifiable assets 681,365   688,997 587,945 578,110
Lucky Friday [Member] | Metal Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 109,356 63,194 306,640 203,154 116,284
Lucky Friday [Member] | Environmental Remediation Services [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 0 0 0 0 0
Lucky Friday [Member] | Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 0 0 0 0 0
Lucky Friday [Member] | Reconciliation of Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 109,356 63,194 306,640 203,154 116,284
Lucky Friday [Member] | Elimination of Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales   0      
Keno Hill [Member]          
Segment Reporting [Line Items]          
Salaries, wages and other benefits 8,897 6,472 28,459 29,658 21,569
Contractors 2,251 3,551 14,746 22,960 10,472
Materials and consumables 7,273 5,994 27,300 28,648 18,018
Product inventory change (3,218) (7,962) (1,452) (8,902) (1,163)
Other direct production costs 2,720 5,014 2,830 8,972 10,187
Depreciation, depletion and amortization 4,176 2,802 19,769 20,380 6,228
Gross profit 24,327 1,038 53,665 (26,754) (29,793)
Other segment items       26,754 29,793
Capital additions 15,025 10,436 58,192 54,869 44,672
Identifiable assets 492,688   505,205 413,982 362,986
Keno Hill [Member] | Metal Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 46,426 16,909 145,317 74,962 35,518
Keno Hill [Member] | Environmental Remediation Services [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 0 0 0 0 0
Keno Hill [Member] | Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 1,639 986 6,123 3,834 0
Keno Hill [Member] | Reconciliation of Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 48,065 17,895 151,440 78,796 35,518
Keno Hill [Member] | Elimination of Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales (1,639) (986) (6,123) (3,834)  
Other Operating Segment [Member]          
Segment Reporting [Line Items]          
Salaries, wages and other benefits 178 58 598 206 3,029
Contractors 4,640 6,931 37,295 19,696 1,125
Materials and consumables 94 106 679 625 1,606
Product inventory change 0 0 0 0 269
Other direct production costs 27 0 2 0 171
Depreciation, depletion and amortization 0 0 0 0 140
Gross profit (287) (7) 544 29 (97)
Capital additions 1,109 1,197 5,133 1,532 280
Identifiable assets 1,495,024   974,703 737,523 820,841
Other Operating Segment [Member] | Metal Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 0 0 0 0 960
Other Operating Segment [Member] | Environmental Remediation Services [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 4,652   39,118 20,556 5,283
Other Operating Segment [Member] | Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 0 0 0 0 0
Other Operating Segment [Member] | Reconciliation of Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 4,652 7,088 $ 39,118 $ 20,556 $ 6,243
Other Operating Segment [Member] | Elimination of Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales   $ 0      
Other Operating Segment [Member] | Operating Segments [Member]          
Segment Reporting [Line Items]          
Salaries, wages and other benefits 50,002        
Contractors 8,912        
Materials and consumables 45,313        
Product inventory change 1,872        
Other direct production costs 13,372        
Depreciation, depletion and amortization 33,768        
Gross profit 253,542        
Capital additions 38,156        
Other Operating Segment [Member] | Operating Segments [Member] | Metal Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 406,781        
Other Operating Segment [Member] | Operating Segments [Member] | Environmental Remediation Services [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 0        
Other Operating Segment [Member] | Operating Segments [Member] | Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 1,639        
Other Operating Segment [Member] | Operating Segments [Member] | Reconciliation of Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales 408,420        
Other Operating Segment [Member] | Operating Segments [Member] | Elimination of Intersegment Sales [Member]          
Segment Reporting [Line Items]          
Total consolidated sales $ (1,639)        
[1] Other operating expense items include general and administrative, exploration and pre-development, care and maintenance, provision for closed operations and environmental matters, and other operating (income) expense, net.
[2] Other operating expense items include general and administrative, exploration and pre-development, care and maintenance, provision for closed operations and environmental matters, and other operating (income) expense, net.
[3] Other operating expense items include general and administrative, exploration and pre-development, care and maintenance costs, provision for closed operations and environmental matters, write-down of property, plant and equipment and other operating (income) expense, net.
[4] Other operating expense items include general and administrative, exploration and pre-development, care and maintenance 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, care and maintenance costs, provision for closed operations and environmental matters, write-down of property, plant and equipment and other operating (income) expense, net.