Inventories, net (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Stockpiles - underground mine	$ 61
Concentrates	2,986	$ 2,048
Dore, net	800	452
Subtotal - product inventories	3,847	2,500
Materials and supplies	8,659	7,861
Total	12,506	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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