Inventories, net (Tables)

6 Months Ended

Jun. 30, 2021

Inventory Disclosure [Abstract]

Schedule of inventory

The following table provides the components of Inventories and the estimated recoverable gold ounces therein (dollars in thousands):

	June 30, 2021			December 31, 2020
	Amount		Gold Ounces	Amount		Gold Ounces
Current inventories:
Materials and supplies	$	7,211	—	$	6,449	—
Merrill-Crowe process plant	1,643		944	4,810		2,587
Carbon-in-column	1,724		1,015	299		166
Finished good (doré and off-site carbon)	8,509		5,010	1,309		710
Non-current inventories:
Stockpiles(1)	—		3,818	—		—
Total	$	19,087	10,787	$	12,867	3,463

(1)During 2021, the Company began stockpiling sulfide ore. The Company intends to use the stockpiles for testing related to the two-stage heap oxidation and leach process or for future processing. As of June 30, 2021, stockpiles had a value of $Nil due to the net realizable value analysis performed by the Company as discussed in the Mine site period costs section below.

Schedule of inventory, Ore on leach pads

The following table summarizes Ore on leach pads and the estimated recoverable gold ounces therein (dollars in thousands):

	June 30, 2021			December 31, 2020
	Amount		Gold Ounces	Amount		Gold Ounces
Ore on leach pads, current	$	37,664	21,723	$	38,041	21,869
Ore on leach pads, non-current	7,298		4,209	7,243		4,164
Total	$	44,962	25,932	$	45,284	26,033

Schedule of Mine site period costs

The following table summarize the components of Mine site period costs (dollars in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Production related costs	$	2,264	$	11,996	$	12,384	$	18,631
Capitalized depreciation and amortization	170		874		594		1,431
Total	$	2,434	$	12,870	$	12,978	$	20,062