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INVENTORIES (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2019	Dec. 31, 2018
Inventories
Material on leach pads	$ 12,970	$ 10,370
In-process inventory	6,128	3,446
Stockpiles	1,401	1,272
Precious metals	6,432	3,421
Materials and supplies	3,751	3,530
Current Inventories	30,682	22,039
Other assets
Inventories
Non-current portion of ore on leach pads	$ 3,400	$ 4,600

X

- Definition

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

+ References

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Represents non-current portion of ore on leach pads which is included in the other assets.

+ References

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- Definition

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

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Represents the carrying amount, net of reserves and adjustments, as of the balance sheet date, of precious metals.

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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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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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