Inventory and Ore on Leach Pads (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Inventory [Line Items]
Inventory, Finished Goods, Net of Reserves	$ 2,263	$ 2,663
Stockpile ore	67,179	6,773
Other Inventory, Net of Reserves	27,113	16,034
Inventory, Supplies, Net of Reserves	60,111	53,147
Inventory	156,666	78,617
Ore on Leach Pad, Current	143,126	92,724
Ore on leach pads, noncurrent	107,576	106,670
Inventory, Ore Stockpiles on Leach Pads, Gross	250,702	199,394
Long-Term Inventory Stockpile	42,076	41,718
Inventory and Ore on Leach Pads	449,444	319,729
Las Chispas
Inventory [Line Items]
Stockpile ore	62,100
Kensington
Inventory [Line Items]
Stockpile ore	1,400	3,100
Palmarejo
Inventory [Line Items]
Stockpile ore	2,400	500
Wharf
Inventory [Line Items]
Stockpile ore	$ 1,300	$ 3,200