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Segment Reporting (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Dec. 31, 2023
Financial information relating to reporting segments      
Revenue $ 213,060 $ 187,298  
Amortization 27,297 22,708  
Other operating expenses 32,632 22,973  
Fair value adjustments, net, pretax 0 10,561  
Interest expense, net of capitalized interest (12,947) (7,389)  
Other, net 2,773 (961) [1]  
Income and mining tax (expense) benefit (16,024) (10,708)  
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent (29,117) (24,586)  
Net income (loss) (29,117) (24,586)  
Assets, Net [2] 1,981,261 1,737,001 $ 1,943,037
Capital expenditures 42,083 74,048  
Gain on debt extinguishment 438 0  
Palmarejo [Member]      
Financial information relating to reporting segments      
Amortization 12,602 8,719  
Other operating expenses 2,254 1,526  
Fair value adjustments, net, pretax 0 0  
Interest expense, net of capitalized interest (26) 122  
Other, net [1] 546 (138)  
Income and mining tax (expense) benefit (11,683) (9,702)  
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent 13,580 11,766  
Assets, Net [2] 314,217 306,852  
Capital expenditures 6,761 10,150  
Gain on debt extinguishment 0    
Rochester      
Financial information relating to reporting segments      
Amortization 6,633 5,218  
Other operating expenses 5,750 2,025  
Fair value adjustments, net, pretax 0 0  
Interest expense, net of capitalized interest (1,340) (175)  
Other, net [1] 30 (93)  
Income and mining tax (expense) benefit 234 239  
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent (11,060) (16,620)  
Assets, Net [2] 1,110,479 877,844  
Capital expenditures 21,243 51,962  
Gain on debt extinguishment 0    
Kensington      
Financial information relating to reporting segments      
Amortization 5,596 5,844  
Other operating expenses 7,626 984  
Fair value adjustments, net, pretax 0 0  
Interest expense, net of capitalized interest (471) (530)  
Other, net [1] (81) (71)  
Income and mining tax (expense) benefit 0 0  
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent (11,089) (5,609)  
Assets, Net [2] 182,085 152,946  
Capital expenditures 13,258 10,702  
Gain on debt extinguishment 0    
Wharf      
Financial information relating to reporting segments      
Amortization 1,393 1,409  
Other operating expenses 1,101 1,014  
Fair value adjustments, net, pretax 0 0  
Interest expense, net of capitalized interest (152) (14)  
Other, net [1] (42) (476)  
Income and mining tax (expense) benefit (1,136) (419)  
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent 13,972 4,017  
Assets, Net [2] 102,351 107,417  
Capital expenditures 308 121  
Gain on debt extinguishment 0    
Silvertip [Member]      
Financial information relating to reporting segments      
Amortization 852 1,221  
Other operating expenses 2,705 6,546  
Fair value adjustments, net, pretax 0 0  
Interest expense, net of capitalized interest (6) (22)  
Other, net [1] (58) (9)  
Income and mining tax (expense) benefit 0 0  
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent (8,901) (9,295)  
Assets, Net [2] 214,522 242,886  
Capital expenditures 509 669  
Gain on debt extinguishment 0    
Other Mining Properties [Member]      
Financial information relating to reporting segments      
Amortization 221 297  
Other operating expenses 13,196 10,878  
Fair value adjustments, net, pretax 0 10,561  
Interest expense, net of capitalized interest (10,952) (6,770)  
Other, net [1] 2,378 (174)  
Income and mining tax (expense) benefit (3,439) (826)  
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent (25,619) (8,845)  
Assets, Net [2] 57,607 49,056  
Capital expenditures 4 444  
Gain on debt extinguishment 438    
Gold [Member]      
Financial information relating to reporting segments      
Revenue 151,769 127,101  
Gold [Member] | Palmarejo [Member]      
Financial information relating to reporting segments      
Revenue 53,902 40,607  
Gold [Member] | Rochester      
Financial information relating to reporting segments      
Revenue 12,681 16,047  
Gold [Member] | Kensington      
Financial information relating to reporting segments      
Revenue 43,485 40,124  
Gold [Member] | Wharf      
Financial information relating to reporting segments      
Revenue 41,701 30,323  
Gold [Member] | Silvertip [Member]      
Financial information relating to reporting segments      
Revenue 0 0  
Gold [Member] | Other Mining Properties [Member]      
Financial information relating to reporting segments      
Revenue 0 0  
Product, Silver      
Financial information relating to reporting segments      
Revenue 61,291 60,197  
Product, Silver | Palmarejo [Member]      
Financial information relating to reporting segments      
Revenue 42,476 41,700  
Product, Silver | Rochester      
Financial information relating to reporting segments      
Revenue 17,148 17,853  
Product, Silver | Kensington      
Financial information relating to reporting segments      
Revenue 34 74  
Product, Silver | Wharf      
Financial information relating to reporting segments      
Revenue 1,633 570  
Product, Silver | Silvertip [Member]      
Financial information relating to reporting segments      
Revenue 0 0  
Product, Silver | Other Mining Properties [Member]      
Financial information relating to reporting segments      
Revenue 0 0  
Product, Metal [Member]      
Financial information relating to reporting segments      
Revenue 213,060 187,298  
Product, Metal [Member] | Palmarejo [Member]      
Financial information relating to reporting segments      
Revenue 96,378 82,307  
Product, Metal [Member] | Rochester      
Financial information relating to reporting segments      
Revenue 29,829 33,900  
Product, Metal [Member] | Kensington      
Financial information relating to reporting segments      
Revenue 43,519 40,198  
Product, Metal [Member] | Wharf      
Financial information relating to reporting segments      
Revenue 43,334 30,893  
Product, Metal [Member] | Silvertip [Member]      
Financial information relating to reporting segments      
Revenue 0 0  
Product, Metal [Member] | Other Mining Properties [Member]      
Financial information relating to reporting segments      
Revenue 0 0  
Product      
Financial information relating to reporting segments      
Costs applicable to sales [3] 145,997 153,056  
Product | Palmarejo [Member]      
Financial information relating to reporting segments      
Costs applicable to sales [3] 54,294 49,265  
Product | Rochester      
Financial information relating to reporting segments      
Costs applicable to sales [3] 26,999 42,865  
Product | Kensington      
Financial information relating to reporting segments      
Costs applicable to sales [3] 39,289 37,382  
Product | Wharf      
Financial information relating to reporting segments      
Costs applicable to sales [3] 25,415 23,544  
Product | Silvertip [Member]      
Financial information relating to reporting segments      
Costs applicable to sales [3] 0 0  
Product | Other Mining Properties [Member]      
Financial information relating to reporting segments      
Costs applicable to sales [3] 0 0  
Mineral, Exploration      
Financial information relating to reporting segments      
Costs applicable to sales 10,491 4,650  
Mineral, Exploration | Palmarejo [Member]      
Financial information relating to reporting segments      
Costs applicable to sales 2,485 1,313  
Mineral, Exploration | Rochester      
Financial information relating to reporting segments      
Costs applicable to sales 431 383  
Mineral, Exploration | Kensington      
Financial information relating to reporting segments      
Costs applicable to sales 1,545 996  
Mineral, Exploration | Wharf      
Financial information relating to reporting segments      
Costs applicable to sales 123 0  
Mineral, Exploration | Silvertip [Member]      
Financial information relating to reporting segments      
Costs applicable to sales 5,280 1,497  
Mineral, Exploration | Other Mining Properties [Member]      
Financial information relating to reporting segments      
Costs applicable to sales $ 627 $ 461  
[1] See Note 13 -- Additional Comprehensive Income (Loss) Detail for additional detail.
[2] Segment assets include receivables, prepaids, inventories, property, plant and equipment, and mineral interests.
[3] Excludes amortization.