Inventories, net (Details)	6 Months Ended	12 Months Ended
	Jun. 30, 2021 USD ($) oz	Dec. 31, 2020 USD ($)
Inventories, net	$ 2,003,000	$ 284,000
Rodeo Project
Dore inventory	873,000	0
In-process inventory	512,000	0
Material and supplies	618,000	284,000
Inventories, net	2,003,000	284,000
Capitalized depreciation and amortization	39,000
Obsolescence allowance	$ 300,000	$ 300,000
Dore inventory gold | oz	868
Dore inventory silver | oz	2,689