Segment Information (Tables)

12 Months Ended

Dec. 31, 2016

Segment Information

Schedule of financial information relating to segments

							Exploration, El
							Quevar,
			Costs		Depreciation,		Velardeña and
			Applicable		Depletion and		Administrative		Pre-Tax				Capital
The Year ended December 31, 2016	Revenue		to Sales		Amortization		Expense		(Income)/Loss		Total Assets		Expenditures
							(in thousands)
Velardeña Properties	$	6,400	$	2,046	$	1,116	$	2,507	$	(2,167)	$	7,821	$	35
Corporate, Exploration & Other		—		—		432		7,598		12,826		6,187		15
	$	6,400	$	2,046	$	1,548	$	10,105	$	10,659	$	14,008	$	50
The Year ended December 31, 2015
Velardeña Properties	$	8,071	$	10,065	$	3,826	$	1,347	$	17,346	$	8,988	$	28
Corporate, Exploration & Other		—		—		654		8,918		8,037		8,013		16
	$	8,071	$	10,065	$	4,480	$	10,265	$	25,383	$	17,001	$	44