Inventory and Ore on Leach Pads (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Inventory Disclosure [Abstract]
Inventory, Finished Goods, Net of Reserves	$ 2,909	$ 6,557
Other Inventory, Net of Reserves	14,788	14,040
Inventory, Supplies, Net of Reserves	33,513	35,289
Inventory	51,210	55,886
Ore on Leach Pad, Current	74,866	66,192
Ore on leach pads, noncurrent	81,963	71,539
Inventory, Ore Stockpiles on Leach Pads, Gross	156,829	137,731
Inventory and Ore on Leach Pads	213,703	193,617
Long-Term Inventory Stockpile	$ 5,664	$ 0

Inventory and Ore on Leach Pads.

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Value of inventory stockpile classified as long-term.

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- Definition

Ore on leach pad current.

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Ore on leach pad non current.

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of merchandise or goods held by the company that are readily available for sale.

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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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Amount before last-in first-out (LIFO) and valuation reserves of ore stockpile material contained on a leach pad, for example, but not limited to, copper or gold ore.

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Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of products used directly or indirectly in the manufacturing or production process, which may or may not become part of the final product. May also include items used in the storage, presentation or transportation of physical goods.

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Amount, after of valuation reserves and allowances, of inventory, classified as other, expected to be sold, or consumed within one year or operating cycle, if longer.

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