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Inventories | 12 Months Ended
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Dec. 31, 2020
Subclassifications of assets, liabilities and equities [abstract] |
Inventories | 11. INVENTORIES
Inventories consist of:
| December 31, 2020 | December 31, 2019
Concentrate inventory | $ | 19,104 |  | $ | 17,433 |
Stockpile ore (1) | 30,063 |  | 27,708 |
Heap leach inventory and in process (2) | 219,334 |  | 169,751 |
Doré and finished inventory (3) | 77,489 |  | 67,820 |
Materials and supplies | 84,556 |  | 88,004 |
Total inventories | $ | 430,546 |  | $ | 370,716 |
Less: current portion of inventories | $ | (406,191) |  | $ | (346,507) |
Non-current portion of inventories (4) | $ | 24,355 |  | $ | 24,209 |
(1)Includes an impairment charge of $2.0 million to reduce the cost basis of inventory to NRV at Manantial Espejo mine (2019 – $5.0 million at Manantial Espejo and Dolores mines). (2)Includes an impairment charge of $26.2 million to reduce the cost basis of inventory to NRV at Manantial Espejo and Dolores mines (2019 - $39.3 million at Manantial Espejo and Dolores mines). (3)Includes an impairment charge of $2.9 million to reduce the cost basis of inventory to NRV at Dolores mine at December 31, 2020. (2019 - $2.9 million at Manantial Espejo and Dolores mines). (4)Inventories at Escobal mine, which include $17.1 million (2019 - $16.9 million) in supplies with the remainder attributable to metals, have been classified as non-current pending the restart of operations. The costs of inventories recognized as expense for the year ended December 31, 2020 amounted to $978.6 million (2019 – $1.1 billion), of which $696.7 million (2019 – $841.3 million) and $254.5 million (2019 – $253.5 million) were included in production costs and depreciation and depletion in the Consolidated Income Statements, respectively. During the year ended December 31, 2020 a $16.2 million NRV recovery (2019 - $0.4 million NRV recovery) was recognized, primarily driven by increased expected precious metal prices, and included in production costs (Note 22). Inventories held at NRV amounted to $215.5 million (2019 - $151.5 million). A portion of the stockpile ore amounting to $2.7 million (2019 - $1.2 million) and a portion of the heap leach inventory amounting to $147.0 million (2019 - $74.5 million) are expected to be recovered or settled after more than twelve months.

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