Sale of Metals and Related Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 7,506	$ 1,778
Costs Applicable to Sales	$ 4,322	1,536
Percentage of provisional payment for gold and silver	95.00%
Term of final payment within shipment date	30 days
Dore [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		1,800
Costs Applicable to Sales		$ 1,500
Minimum [Member]
Disaggregation of Revenue [Line Items]
Provisional payment term of gold and silver	10 years
Maximum [Member]
Disaggregation of Revenue [Line Items]
Provisional payment term of gold and silver	12 days