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Inventories, net (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Inventories, net
Stockpiles - underground mine	$ 340	$ 73
Concentrates	1,859	902
Dore, net		169
Subtotal - product inventories	2,199	1,144
Materials and supplies	4,997	5,796
Total	7,196	6,940
Materials and supplies
Inventories, net
Inventory reserve	$ 1,100	$ 700

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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