Segment Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($) segment	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Segment Information
Number of reportable segments | segment			2
Revenue	$ 5,861	$ 1,224	$ 7,639	$ 2,420
Costs Applicable to Sales	3,328	420	4,864	984
Depreciation, depletion and amortization	168	265	323	544
Exploration, El Quevar, Velardena and Administrative Expense	2,281	2,028	4,915	5,533
Pre-Tax (gain) loss	743	2,323	3,973	5,659
Total Assets	19,105	11,413	19,105	11,413	$ 18,306
Capital Expenditures	825	1	1,371	2
Mexico Operations
Segment Information
Revenue	5,861	1,224	7,639	2,420
Costs Applicable to Sales	3,328	420	4,864	984
Depreciation, depletion and amortization	109	196	218	400
Exploration, El Quevar, Velardena and Administrative Expense	690	324	1,349	981
Pre-Tax (gain) loss	(1,644)	(232)	(1,192)	139
Total Assets	9,613	4,267	9,613	4,267
Capital Expenditures	770		$ 1,311	1
Velardena Properties
Segment Information
Number of reportable segments | segment			1
Corporate, Exploration and Other
Segment Information
Depreciation, depletion and amortization	59	69	$ 105	144
Exploration, El Quevar, Velardena and Administrative Expense	1,591	1,704	3,566	4,552
Pre-Tax (gain) loss	2,387	2,555	5,165	5,520
Total Assets	9,492	7,146	9,492	7,146
Capital Expenditures	$ 55	$ 1	$ 60	$ 1