Inventories, net (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Stockpiles - underground mine	$ 655
Concentrates	3,574	$ 2,048
Dore, net	641	452
Subtotal - product inventories	4,870	2,500
Materials and supplies	8,723	7,861
Total	13,593	10,361
Materials and supplies
Inventory reserve	$ 384	$ 384

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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