v3.26.1
Segment Reporting (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Segment Reporting Information [Line Items]          
Revenue $ 1,085,592 $ 480,650 $ 1,941,784 $ 840,712  
Total assets for reportable segments 13,694,733   13,694,733   $ 3,928,905
Amortization 255,985 61,421 355,810 104,514  
General and administrative 22,694 13,250 44,356 27,162  
Pre-development, reclamation, and other 6,557 13,161 36,384 30,114  
Income from operations 216,514 140,108 565,684 202,264  
Other, net 9,907 1,460 17,449 1,866  
Income (loss) before income and mining taxes 215,091 133,321 563,806 185,087  
Stock repurchase program (110,422) (2,004)      
Operating Segments          
Segment Reporting Information [Line Items]          
Total assets for reportable segments 13,694,733 [1],[2] 3,939,230 [3],[4] 13,694,733 [1],[2] 3,939,230 [3],[4]  
Capital Expenditures 125,709 60,807 199,788 110,809  
Amortization   61,421   104,514  
General and administrative 22,694 13,250 44,356 27,162  
Pre-development, reclamation, and other 6,557 13,161 36,384 30,114  
Income from operations 216,514 140,108 565,684 202,264  
Other, net (1,423) [5] (6,787) [6] (1,878) [7] (17,177) [8]  
Income (loss) before income and mining taxes 215,091 133,321 563,806 185,087  
New Afton | Operating Segments          
Segment Reporting Information [Line Items]          
Total assets for reportable segments [1],[2] 5,949,685   5,949,685    
Capital Expenditures 11,826   11,826    
Amortization 106,377   120,591    
General and administrative 26   (31)    
Pre-development, reclamation, and other 323   1,219    
Income from operations (31,210)   (44,975)    
Other, net 1,727 [5]   2,680 [7]    
Income (loss) before income and mining taxes (29,483)   (42,295)    
Rainy River | Operating Segments          
Segment Reporting Information [Line Items]          
Total assets for reportable segments [1],[2] 3,709,521   3,709,521    
Capital Expenditures 57,097   63,515    
Amortization 79,357   96,046    
General and administrative 1   108    
Pre-development, reclamation, and other 946   3,031    
Income from operations (52,036)   (67,379)    
Other, net 3,548 [5]   6,141 [7]    
Income (loss) before income and mining taxes (48,488)   (61,238)    
Las Chispas | Operating Segments          
Segment Reporting Information [Line Items]          
Total assets for reportable segments 1,630,214 [2] 1,725,990 [3],[4] 1,630,214 [2] 1,725,990 [3],[4]  
Capital Expenditures 16,263 9,200 28,793 14,538  
Amortization 39,626 22,375 74,945 31,311  
General and administrative 466 92 881 102  
Other operating expenses     411    
Pre-development, reclamation, and other 198 833 411 890  
Income from operations 108,161 18,341 230,889 22,645  
Other, net 3,416 [5] 820 [6] 7,773 [7] 1,231 [8]  
Income (loss) before income and mining taxes 111,577 19,161 238,662 23,876  
Palmarejo | Operating Segments          
Segment Reporting Information [Line Items]          
Total assets for reportable segments 312,927 [2] 308,483 [3],[4] 312,927 [2] 308,483 [3],[4]  
Capital Expenditures 7,142 5,643 15,650 11,500  
Amortization 6,086 9,406 12,875 18,587  
General and administrative 351 447 703 941  
Other operating expenses     1,578    
Pre-development, reclamation, and other 770 2,542 1,578 3,677  
Income from operations 83,734 49,027 208,188 86,460  
Other, net (1,018) [5] (1,348) [6] (1,079) [7] (2,021) [8]  
Income (loss) before income and mining taxes 82,716 47,679 207,109 84,439  
Rochester | Operating Segments          
Segment Reporting Information [Line Items]          
Total assets for reportable segments 1,351,331 [2] 1,253,548 [3],[4] 1,351,331 [2] 1,253,548 [3],[4]  
Capital Expenditures 17,878 24,466 40,710 39,319  
Amortization 13,691 16,748 29,734 31,655  
General and administrative 386 343 773 667  
Other operating expenses     4,518    
Pre-development, reclamation, and other 2,293 2,308 4,518 4,738  
Income from operations 64,143 26,426 172,180 41,388  
Other, net (781) [5] (2,763) [6] (1,729) [7] (5,455) [8]  
Income (loss) before income and mining taxes 63,362 23,663 170,451 35,933  
Kensington | Operating Segments          
Segment Reporting Information [Line Items]          
Total assets for reportable segments 263,868 [2] 246,478 [3],[4] 263,868 [2] 246,478 [3],[4]  
Capital Expenditures 12,159 16,318 21,296 31,791  
Amortization 8,220 10,221 16,889 17,692  
General and administrative 353 304 704 594  
Other operating expenses     558    
Pre-development, reclamation, and other 451 318 558 598  
Income from operations 27,796 31,305 77,179 43,050  
Other, net (98) [5] (256) [6] (214) [7] (518) [8]  
Income (loss) before income and mining taxes 27,698 31,049 76,965 42,532  
Wharf | Operating Segments          
Segment Reporting Information [Line Items]          
Total assets for reportable segments 168,966 [2] 124,995 [3],[4] 168,966 [2] 124,995 [3],[4]  
Capital Expenditures (1,913) 3,591 11,162 10,955  
Amortization 1,261 1,549 2,154 3,023  
General and administrative 316 273 632 535  
Other operating expenses     (8,623)    
Pre-development, reclamation, and other (9,292) 845 (8,623) 1,771  
Income from operations 57,005 43,979 84,810 70,019  
Other, net (49) [5] (48) [6] (123) [7] (189) [8]  
Income (loss) before income and mining taxes 56,956 43,931 84,687 69,830  
Silvertip | Operating Segments          
Segment Reporting Information [Line Items]          
Total assets for reportable segments 230,036 [2] 221,675 [3],[4] 230,036 [2] 221,675 [3],[4]  
Capital Expenditures 5,141 1,528 6,720 2,382  
Amortization 934 928 1,890 1,874  
General and administrative 0 0 0 0  
Other operating expenses     7,437    
Pre-development, reclamation, and other 3,710 2,929 7,437 6,007  
Income from operations (10,925) (13,085) (24,843) (23,216)  
Other, net (65) [5] (84) [6] (242) [7] 13 [8]  
Income (loss) before income and mining taxes (10,990) (13,169) (25,085) (23,203)  
Other Mining Properties | Operating Segments          
Segment Reporting Information [Line Items]          
Total assets for reportable segments 78,185 [1],[2] 58,061 [3],[4] 78,185 [1],[2] 58,061 [3],[4]  
Capital Expenditures 116 61 116 324  
Amortization 433 194 686 372  
General and administrative 20,795 11,791 40,586 24,323  
Other operating expenses     26,255    
Pre-development, reclamation, and other 7,158 3,386 26,255 12,433  
Income from operations (30,154) (15,885) (70,365) (38,082)  
Other, net (8,103) [5] (3,108) [6] (15,085) [7] (10,238) [8]  
Income (loss) before income and mining taxes (38,257) (18,993) (85,450) (48,320)  
Gold sales | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 694,992 323,114 1,170,214 558,441  
Gold sales | New Afton | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 62,553   81,040    
Gold sales | Rainy River | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 294,587   388,803    
Gold sales | Las Chispas | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 73,994 53,125 146,359 81,007  
Gold sales | Palmarejo | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 52,330 56,067 116,808 99,762  
Gold sales | Rochester | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 52,403 46,267 120,643 88,050  
Gold sales | Kensington | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 87,321 89,726 196,140 154,933  
Gold sales | Wharf | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 71,804 77,929 120,421 134,689  
Gold sales | Silvertip | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0 0 0 0  
Gold sales | Other Mining Properties | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0 0 0 0  
Silver sales | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 321,629 157,536 683,827 282,271  
Silver sales | New Afton | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 1,804   2,360    
Silver sales | Rainy River | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 10,197   12,400    
Silver sales | Las Chispas | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 112,899 49,525 234,165 79,662  
Silver sales | Palmarejo | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 107,243 58,072 231,025 110,183  
Silver sales | Rochester | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 88,375 48,710 201,539 89,553  
Silver sales | Kensington | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 16 40 (7) 76  
Silver sales | Wharf | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 1,095 1,189 2,345 2,797  
Silver sales | Silvertip | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0 0 0 0  
Silver sales | Other Mining Properties | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0 0 0 0  
Metal sales | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 1,085,592 480,650 1,941,784 840,712  
Metal sales | New Afton | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 133,328   171,143    
Metal sales | Rainy River | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 304,784   401,203    
Metal sales | Las Chispas | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 186,893 102,650 380,524 160,669  
Metal sales | Palmarejo | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 159,573 114,139 347,833 209,945  
Metal sales | Rochester | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 140,778 94,977 322,182 177,603  
Metal sales | Kensington | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 87,337 89,766 196,133 155,009  
Metal sales | Wharf | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 72,899 79,118 122,766 137,486  
Metal sales | Silvertip | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0 0 0 0  
Metal sales | Other Mining Properties | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0 0 0 0  
Product          
Segment Reporting Information [Line Items]          
Costs applicable to sales [10] 549,747 [9] 229,454 879,756 433,720  
Product | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales   229,454 [11]   433,720 [12]  
Product | New Afton | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 52,726 [9]   88,965 [13]    
Product | Rainy River | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 271,743 [9]   364,187 [13]    
Product | Las Chispas | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 35,093 [9] 57,747 [11] 66,551 [13] 100,581 [12]  
Product | Palmarejo | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 61,285 [9] 48,703 [11] 112,533 [13] 92,406 [12]  
Product | Rochester | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 58,907 [9] 47,928 [11] 112,690 [13] 96,464 [12]  
Product | Kensington | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 48,180 [9] 46,083 [11] 95,993 [13] 88,239 [12]  
Product | Wharf | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 21,813 [9] 28,993 [11] 38,837 [13] 56,030 [12]  
Product | Silvertip | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 0 [9] 0 [11] 0 [13] 0 [12]  
Product | Other Mining Properties | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 0 [9] 0 [11] 0 [13] 0 [12]  
Mineral, Exploration          
Segment Reporting Information [Line Items]          
Costs applicable to sales 34,095 23,256 59,794 42,938  
Mineral, Exploration | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales   23,256   42,938  
Mineral, Exploration | New Afton | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 5,086   5,374    
Mineral, Exploration | Rainy River | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 4,773   5,210    
Mineral, Exploration | Las Chispas | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 3,349 3,262 6,847 5,140  
Mineral, Exploration | Palmarejo | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 7,347 4,014 11,956 7,874  
Mineral, Exploration | Rochester | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 1,358 1,224 2,287 2,691  
Mineral, Exploration | Kensington | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 2,337 1,535 4,810 4,836  
Mineral, Exploration | Wharf | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 1,796 3,479 4,956 6,108  
Mineral, Exploration | Silvertip | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 6,281 9,228 15,516 15,335  
Mineral, Exploration | Other Mining Properties | Operating Segments          
Segment Reporting Information [Line Items]          
Costs applicable to sales 1,768 $ 514 2,838 $ 954  
Product, Copper | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 68,971   87,743    
Product, Copper | New Afton | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 68,971   87,743    
Product, Copper | Rainy River | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0   0    
Product, Copper | Las Chispas | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0   0    
Product, Copper | Palmarejo | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0   0    
Product, Copper | Rochester | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0   0    
Product, Copper | Kensington | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0   0    
Product, Copper | Wharf | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0   0    
Product, Copper | Silvertip | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue 0   0    
Product, Copper | Other Mining Properties | Operating Segments          
Segment Reporting Information [Line Items]          
Revenue $ 0   $ 0    
[1] Segment assets include receivables, prepaids, inventories, property, plant and equipment, mineral interests, and goodwill.
[2] Segment assets include receivables, prepaids, inventories, property, plant and equipment, mineral interests, and goodwill
[3] Segment assets include receivables, prepaids, inventories, property, plant and equipment, mineral interests, and goodwill.
[4] Segment assets include receivables, prepaids, inventories, property, plant and equipment, mineral interests, and goodwill
[5] Other non-operating expenses include Gain (loss) on debt extinguishment, Fair value adjustments, net, and Other, net. Refer to Notes 8, 12, and 14, respectively. Additionally, Other non-operating expense includes Interest expense, net of capitalized interest, which is primarily incurred at the corporate non-operating segment included in Other.
[6] Other non-operating expenses include Gain (loss) on debt extinguishment, Fair value adjustments, net, and Other, net. Refer to Notes 8, 12, and 14, respectively. Additionally, Other non-operating expense includes Interest expense, net of capitalized interest, which is primarily incurred at the corporate non-operating segment included in Other.
[7] Other non-operating expenses include Gain (loss) on debt extinguishment, Fair value adjustments, net, and Other, net. Refer to Notes 8, 12, and 14, respectively. Additionally, Other non-operating expense includes Interest expense, net of capitalized interest, which is primarily incurred at the corporate non-operating segment included in Other.
[8] Other non-operating expenses include Gain (loss) on debt extinguishment, Fair value adjustments, net, and Other, net. Refer to Notes 8, 12, and 14, respectively. Additionally, Other non-operating expense includes Interest expense, net of capitalized interest, which is primarily incurred at the corporate non-operating segment included in Other.
[9] Excludes amortization.
[10] Excludes amortization.
[11] Excludes amortization.
[12] Excludes amortization.
[13] Excludes amortization.