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INVENTORIES (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2020 | Mar. 31, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2020
Inventories |  |  |  |  |  |  |
Material on leach pads | $ 12,758 |  |  |  | $ 12,758 |  | $ 21,003
In-process inventory | 6,098 |  |  |  | 6,098 |  | 3,922
Stockpiles | 2,736 |  |  |  | 2,736 |  | 635
Precious metals | 1,696 |  |  |  | 1,696 |  | 1,344
Materials and supplies | 4,858 |  |  |  | 4,858 |  | 4,845
Inventories | 28,146 |  |  |  | 28,146 |  | 31,749
Less current portion | 25,430 |  |  |  | 25,430 |  | 26,964
Long-term portion | 2,716 |  |  |  | 2,716 |  | $ 4,785
Production costs applicable to sales |  |  |  |  |  |  |
Inventories |  |  |  |  |  |  |
Inventory write-down | 2,900 |  | $ 2,600 |  | 2,900 | $ 2,600 |
Depreciation and depletion |  |  |  |  |  |  |
Inventories |  |  |  |  |  |  |
Inventory write-down | 100 |  | 500 |  | $ 100 | 500 |
Black Fox Complex |  |  |  |  |  |  |
Inventories |  |  |  |  |  |  |
Inventory write-down |  |  | $ 1,900 |  |  | $ 1,900 |
Gold Bar mine |  |  |  |  |  |  |
Inventories |  |  |  |  |  |  |
Inventory write-down |  | $ 2,200 |  | $ 1,200 |  |  |
El Gallo Project |  |  |  |  |  |  |
Inventories |  |  |  |  |  |  |
Inventory write-down | $ 800 |  |  |  |  |  |

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