Inventories (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2023 USD ($) oz	Dec. 31, 2022 USD ($) oz
Inventories, net	$ 1,490,000	$ 1,371,000
Rodeo Project
Dore inventory	237,000	230,000
In-process inventory	673,000	572,000
Material and supplies	580,000	569,000
Inventories, net	1,490,000	1,371,000
Capitalized depreciation and amortization	$ 29,000	$ 28,000
Dore inventory gold | oz	126	157
Dore inventory silver | oz	818	652
Obsolescence allowance	$ 300,000	$ 300,000