Plant, Equipment, and Mine Development, Net (Tables)

6 Months Ended

12 Months Ended

Jun. 30, 2020

Dec. 31, 2019

Plant, Equipment, and Mine Development, Net

Schedule of components of plant, equipment, and mine development, net

	Depreciation Life	June 30,		December 31,
	of Method	2020		2019
Process equipment	5 - 13 years	$	15,809	$	14,770
Leach pads	Units-of-production		17,431		17,419
Buildings and leasehold improvements	10 years		10,507		10,507
Mine equipment	5 - 7 years		4,898		4,716
Vehicles	3 - 5 years		730		136
Furniture and office equipment	7 years		290		129
Mine development	Units-of-production		408		119
Construction in progress and other			13,736		936
		$	63,809	$	48,732
Less: accumulated depreciation and amortization			(21,537)		(17,208)
Total		$	42,272	$	31,524

The following table provides the components of plant, equipment, and mine development, net (in thousands):

	Depreciation Life		December 31,
	of Method		2019		2018
Process equipment		5 – 13 years	$	14,770	$	6,759
Leach pads		Units-of-production		11,190		11,190
Buildings and leasehold improvements		10 years		10,507		10,507
Restart leach pads		18 months		6,229		—
Mine equipment		5 – 7 years		4,716		3,905
Vehicles		3 – 5 years		136		41
Furniture and office equipment		7 years		129		22
Mine development		Units-of-production		119		—
Construction in progress and other				20,619		20,750
			$	68,415	$	53,174
Less: accumulated depreciation and amortization				(17,208)		(11,770)
Total			$	51,207	$	41,404