Segment Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021 USD ($) segment	Mar. 31, 2020 USD ($)	Dec. 31, 2020 USD ($)
Segment Information
Number of reportable segments | segment	2
Revenue	$ 1,778	$ 1,196
Costs Applicable to Sales	1,536	564
Depreciation, depletion and amortization	155	279
Exploration, El Quevar, Velardena and Administrative Expense	2,634	3,505
Pre-Tax (gain) loss	3,230	3,336
Total Assets	18,825	10,235	$ 18,306
Capital Expenditures	546	1
Mexico Operations
Segment Information
Revenue	1,778
Costs Applicable to Sales	1,536
Depreciation, depletion and amortization	109
Exploration, El Quevar, Velardena and Administrative Expense	659
Pre-Tax (gain) loss	452
Total Assets	7,917
Capital Expenditures	$ 541
Velardena Properties
Segment Information
Number of reportable segments | segment	1
Revenue		1,196
Costs Applicable to Sales		564
Depreciation, depletion and amortization		204
Exploration, El Quevar, Velardena and Administrative Expense		657
Pre-Tax (gain) loss		371
Total Assets		4,663
Capital Expenditures		1
Corporate, Exploration and Other
Segment Information
Depreciation, depletion and amortization	$ 46	75
Exploration, El Quevar, Velardena and Administrative Expense	1,975	2,848
Pre-Tax (gain) loss	2,778	2,965
Total Assets	10,908	$ 5,572
Capital Expenditures	$ 5