Segment Reporting (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2025		Dec. 31, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Revenue		$ 2,070,126		$ 1,054,006	$ 821,206
Amortization		251,099		124,974	99,822
Other operating expenses		126,985	[1]	99,000	96,241
Costs and Expenses		1,363,113		889,824	859,921
Income (loss) from operations		707,013		164,182	(38,715)
(Gain) loss on debt extinguishment		(113)		417	3,437
Fair value adjustments, net, pretax		(342)		0	3,384
Interest Income (Expense), Nonoperating		30,942		51,276	29,099
Other, net	[2]	6,922		13,027	(7,463)
Income (loss) before income and mining taxes		682,538		126,350	(68,456)
Income and mining tax (expense) benefit		(96,666)		(67,450)	(35,156)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent		585,872		58,900	(103,612)
Total assets for reportable segments		3,928,905	[3]	2,161,881	1,943,037
Payments to Acquire Productive Assets		221,162		183,188	364,617
Las Chispas
Segment Reporting Information [Line Items]
Amortization		94,213
Other operating expenses	[1]	2,162
Costs and Expenses		308,480
Income (loss) from operations		112,951
(Gain) loss on debt extinguishment		0
Fair value adjustments, net, pretax		0
Interest Income (Expense), Nonoperating		(131)
Other, net	[2]	12,224
Income (loss) before income and mining taxes		125,044
Income and mining tax (expense) benefit		(78,183)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent		46,861
Total assets for reportable segments		1,661,565
Payments to Acquire Productive Assets		38,149
Palmarejo
Segment Reporting Information [Line Items]
Amortization		37,015		44,979	35,709
Other operating expenses		7,691	[1]	8,665	8,064
Costs and Expenses		254,890		262,332	245,922
Income (loss) from operations		218,874		116,728	67,285
(Gain) loss on debt extinguishment		0		0	0
Fair value adjustments, net, pretax		0		0	0
Interest Income (Expense), Nonoperating		315		(324)	(844)
Other, net		(5,615)	[2]	7,074	4,590
Income (loss) before income and mining taxes		212,944		124,126	72,719
Income and mining tax (expense) benefit		(103,526)		(45,765)	(26,016)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent		109,418		78,361	46,703
Total assets for reportable segments		311,672		316,232	312,879
Payments to Acquire Productive Assets		25,534		30,621	41,766
Rochester
Segment Reporting Information [Line Items]
Amortization		69,283		41,293	26,392
Other operating expenses		12,155	[1]	12,963	26,005
Costs and Expenses		299,118		213,937	224,889
Income (loss) from operations		158,924		1,875	(68,867)
(Gain) loss on debt extinguishment		(106)		0	0
Fair value adjustments, net, pretax		(342)		0	0
Interest Income (Expense), Nonoperating		(9,480)		5,081	1,603
Other, net		(446)	[2]	(363)	(293)
Income (loss) before income and mining taxes		148,550		(3,569)	(70,763)
Income and mining tax (expense) benefit		(9,004)		(1,778)	(816)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent		139,546		(5,347)	(71,579)
Total assets for reportable segments		1,280,017		1,227,745	1,081,442
Payments to Acquire Productive Assets		65,750		72,676	263,401
Kensington
Segment Reporting Information [Line Items]
Amortization		39,295		28,201	25,905
Other operating expenses		7,930	[1]	9,753	3,440
Costs and Expenses		234,055		201,205	189,904
Income (loss) from operations		143,655		23,924	(27,426)
(Gain) loss on debt extinguishment		(7)		0	0
Fair value adjustments, net, pretax		0		0	0
Interest Income (Expense), Nonoperating		(361)		1,681	1,744
Other, net		(459)	[2]	(312)	(311)
Income (loss) before income and mining taxes		142,828		21,931	(29,481)
Income and mining tax (expense) benefit		(1,687)		(576)	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent		141,141		21,355	(29,481)
Total assets for reportable segments		263,614		223,525	171,602
Payments to Acquire Productive Assets		65,635		68,656	53,316
Wharf
Segment Reporting Information [Line Items]
Amortization		6,558		6,487	6,694
Other operating expenses		5,692	[1]	4,519	4,157
Costs and Expenses		136,594		115,564	125,508
Income (loss) from operations		202,585		118,441	63,991
(Gain) loss on debt extinguishment		0		0	0
Fair value adjustments, net, pretax				0	0
Interest Income (Expense), Nonoperating		(158)		544	329
Other, net		(178)	[2]	(509)	(396)
Income (loss) before income and mining taxes		202,249		117,388	63,266
Income and mining tax (expense) benefit		(19,098)		(10,679)	(7,047)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent		183,151		106,709	56,219
Total assets for reportable segments		121,986		119,407	102,245
Payments to Acquire Productive Assets		17,802		7,175	2,472
Silvertip
Segment Reporting Information [Line Items]
Amortization		3,903		3,235	4,018
Other operating expenses		12,338	[1]	9,923	17,104
Costs and Expenses		47,406		40,490	33,373
Income (loss) from operations		(47,406)		(40,490)	(33,373)
(Gain) loss on debt extinguishment		0		0	0
Fair value adjustments, net, pretax		0		0	0
Interest Income (Expense), Nonoperating		0		11	63
Other, net		(83)	[2]	(43)	(129)
Income (loss) before income and mining taxes		(47,489)		(40,544)	(33,565)
Income and mining tax (expense) benefit		0		0	0
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent		(47,489)		(40,544)	(33,565)
Total assets for reportable segments		220,285		219,613	215,545
Payments to Acquire Productive Assets		7,112		3,597	2,867
Other Mining Properties
Segment Reporting Information [Line Items]
Amortization		832		779	1,104
Other operating expenses		79,017	[1]	53,177	37,471
Costs and Expenses		82,570		56,296	40,325
Income (loss) from operations		(82,570)		(56,296)	(40,325)
(Gain) loss on debt extinguishment		0		417	3,437
Fair value adjustments, net, pretax		0		0	3,384
Interest Income (Expense), Nonoperating		(20,497)		44,283	26,204
Other, net		1,479	[2]	7,180	(10,924)
Income (loss) before income and mining taxes		(101,588)		(92,982)	(70,632)
Income and mining tax (expense) benefit		114,832		(8,652)	(1,277)
Income (Loss) from Continuing Operations, Net of Tax, Attributable to Parent		13,244		(101,634)	(71,909)
Total assets for reportable segments		69,766	[3]	55,359	59,324
Payments to Acquire Productive Assets		1,180		463	795
Gold sales
Segment Reporting Information [Line Items]
Revenue		1,343,729		734,861	575,677
Gold sales | Las Chispas
Segment Reporting Information [Line Items]
Revenue		203,234
Gold sales | Palmarejo
Segment Reporting Information [Line Items]
Revenue		218,064		190,520	155,036
Gold sales | Rochester
Segment Reporting Information [Line Items]
Revenue		210,680		91,541	75,571
Gold sales | Kensington
Segment Reporting Information [Line Items]
Revenue		377,693		225,200	162,010
Gold sales | Wharf
Segment Reporting Information [Line Items]
Revenue		334,058		227,600	183,060
Gold sales | Silvertip
Segment Reporting Information [Line Items]
Revenue		0		0	0
Gold sales | Other Mining Properties
Segment Reporting Information [Line Items]
Revenue		0		0	0
Silver sales
Segment Reporting Information [Line Items]
Revenue		726,397		319,145	245,529
Silver sales | Las Chispas
Segment Reporting Information [Line Items]
Revenue		218,197
Silver sales | Palmarejo
Segment Reporting Information [Line Items]
Revenue		255,700		188,540	158,171
Silver sales | Rochester
Segment Reporting Information [Line Items]
Revenue		247,362		124,271	80,451
Silver sales | Kensington
Segment Reporting Information [Line Items]
Revenue		17		(71)	468
Silver sales | Wharf
Segment Reporting Information [Line Items]
Revenue		5,121		6,405	6,439
Silver sales | Silvertip
Segment Reporting Information [Line Items]
Revenue		0		0	0
Silver sales | Other Mining Properties
Segment Reporting Information [Line Items]
Revenue		0		0	0
Metal sales
Segment Reporting Information [Line Items]
Revenue		2,070,126		1,054,006	821,206
Metal sales | Las Chispas
Segment Reporting Information [Line Items]
Revenue		421,431
Metal sales | Palmarejo
Segment Reporting Information [Line Items]
Revenue		473,764		379,060	313,207
Metal sales | Rochester
Segment Reporting Information [Line Items]
Revenue		458,042		215,812	156,022
Metal sales | Kensington
Segment Reporting Information [Line Items]
Revenue		377,710		225,129	162,478
Metal sales | Wharf
Segment Reporting Information [Line Items]
Revenue		339,179		234,005	189,499
Metal sales | Silvertip
Segment Reporting Information [Line Items]
Revenue		0		0	0
Metal sales | Other Mining Properties
Segment Reporting Information [Line Items]
Revenue		0		0	0
Product
Segment Reporting Information [Line Items]
Costs applicable to sales	[4]	898,437		606,192	632,896
Product | Las Chispas
Segment Reporting Information [Line Items]
Costs applicable to sales	[4]	201,684
Product | Palmarejo
Segment Reporting Information [Line Items]
Costs applicable to sales		191,657	[4]	195,458	194,309
Product | Rochester
Segment Reporting Information [Line Items]
Costs applicable to sales		209,114	[4]	154,611	171,271
Product | Kensington
Segment Reporting Information [Line Items]
Costs applicable to sales		179,054	[4]	157,757	152,659
Product | Wharf
Segment Reporting Information [Line Items]
Costs applicable to sales		116,928	[4]	98,366	114,657
Product | Silvertip
Segment Reporting Information [Line Items]
Costs applicable to sales		0	[4]	0	0
Product | Other Mining Properties
Segment Reporting Information [Line Items]
Costs applicable to sales		0	[4]	0	0
Mineral, Exploration
Segment Reporting Information [Line Items]
Costs applicable to sales		86,592		59,658	30,962
Mineral, Exploration | Las Chispas
Segment Reporting Information [Line Items]
Costs applicable to sales		10,421
Mineral, Exploration | Palmarejo
Segment Reporting Information [Line Items]
Costs applicable to sales		18,527		13,230	7,840
Mineral, Exploration | Rochester
Segment Reporting Information [Line Items]
Costs applicable to sales		8,566		5,070	1,221
Mineral, Exploration | Kensington
Segment Reporting Information [Line Items]
Costs applicable to sales		7,776		5,494	7,900
Mineral, Exploration | Wharf
Segment Reporting Information [Line Items]
Costs applicable to sales		7,416		6,192	0
Mineral, Exploration | Silvertip
Segment Reporting Information [Line Items]
Costs applicable to sales		31,165		27,332	12,251
Mineral, Exploration | Other Mining Properties
Segment Reporting Information [Line Items]
Costs applicable to sales		$ 2,721		$ 2,340	$ 1,750

[1] Other operating expenses include General and administrative and Pre-development, reclamation, and other.

[2] See Note 15 -- Additional Comprehensive Income (Loss) Detail for additional detail.

[3] Segment assets include receivables, prepaids, inventories, property, plant and equipment, mineral interests, and goodwill

[4] Excludes amortization.