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Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Revenue - mineral property sale			$ 502
Costs, expenses and other:
Exploration expense	344	180	686	519
Depreciation and amortization	7	6	19	8
General and administrative	344	40	1,509	900
Total costs, expenses and other	695	226	2,214	1,427
Interest income (net)	46	38	109	114
Unrealized (loss) gain on marketable equity securities	(74)	157	(737)	618
(Loss) gain on derivative instruments		(18)		267
Total other (loss) income	(28)	177	(628)	999
Net Loss	$ (723)	$ (49)	$ 2,340	$ 428
Basic and diluted	$ (0.01)	$ (0.00)	$ (0.04)	$ (0.01)
Weighted average shares outstanding:
Basic and diluted	58,303	55,864	58,379	44,467

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