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INVENTORIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Inventories
Material on leach pads	$ 21,003	$ 37,328
In-process inventory	3,922	3,847
Stockpiles	635	1,384
Precious metals	1,344	1,038
Materials and supplies	4,845	4,382
Inventories	31,749	47,979
Less current portion	26,964	38,376
Long-term portion	4,785	9,603
Production costs applicable to sales
Inventories
Inventory write-down	13,900	1,700
Depreciation and depletion
Inventories
Inventory write-down	2,100
Black Fox Complex
Inventories
Inventory write-down	1,900
Gold Bar mine
Inventories
Inventory write-down	12,400
El Gallo Project
Inventories
Inventory write-down	$ 1,700	$ 1,700

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- Definition

Represents the carrying amount, net of reserves and adjustments, as of the balance sheet date, of ore on leach pads.

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Carrying amount, net of reserves and adjustments, as of the balance sheet date, of ore stockpiled.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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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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Inventories not expected to be converted to cash, sold or exchanged within the normal operating cycle.

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Aggregated amount of unprocessed materials to be used in manufacturing or production process and supplies that will be consumed. This amount is net of valuation reserves and adjustments.

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Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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Amount of loss from reductions in inventory due to subsequent measurement adjustments, including, but not limited to, physical deterioration, obsolescence, or changes in price levels.

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