Segment Information (Tables)

6 Months Ended

Jun. 30, 2018

Segment Information

Schedule of financial information relating to segments

							Exploration, El
			Costs		Depreciation,		Quevar, Velardeña
Three Months Ended			Applicable		Depletion and		and Administrative		Pre-Tax (gain)				Capital
June 30, 2018	Revenue		to Sales		Amortization		Expense		loss		Total Assets		Expenditures
Velardeña Properties	$	1,730	$	525	$	170	$	605	$	(443)			$	—
Corporate, Exploration & Other		—		—		94		2,031		2,132				30
	$	1,730	$	525	$	264	$	2,636	$	1,689			$	30
Six Months Ended
June 30, 2018
Velardeña Properties	$	3,367	$	1,028	$	373	$	1,193	$	(723)	$	6,369	$	28
Corporate, Exploration & Other		—		—		187		4,164		3,147		5,822		30
	$	3,367	$	1,028	$	560	$	5,357	$	2,424	$	12,191	$	58
Three Months Ended
June 30, 2017
Velardeña Properties	$	1,692	$	548	$	35	$	381	$	(877)			$	—
Corporate, Exploration & Other		—		—		95		1,510		1,337				—
	$	1,692	$	548	$	130	$	1,891	$	460			$	—
Six Months Ended
June 30, 2017
Velardeña Properties	$	3,336	$	1,085	$	126	$	738	$	(1,651)	$	7,326	$	—
Corporate, Exploration & Other		—		—		192		3,211		3,184		5,929		—
	$	3,336	$	1,085	$	318	$	3,949	$	1,533	$	13,255	$	—