Revenue, Deferred Revenue and Related Costs (Details) $ / shares in Units, shares in Millions					1 Months Ended	12 Months Ended
	Dec. 03, 2019 $ / item	Dec. 02, 2019 USD ($) $ / oz $ / item	Dec. 01, 2019 $ / item	Aug. 02, 2017 USD ($) $ / shares shares	Aug. 31, 2017 item	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Oxide plant lease						$ 7,730,000	$ 7,217,000
Lease related costs						2,377,000	$ 2,289,000
Operating Lease Monthly Fee						125,000
Average price | $ / oz		20.00
Average head grade | $ / item		1,000
Lease payment		$ 125,000
Variable fee (per tonne) | $ / item	11.00	22.00
Oxide Plant
Renewal term				2 years
Expected lease proceeds				$ 1,000,000		300,000
Gross proceeds from common stock sale				$ 1,000,000
Common stock issued (in shares) | shares				1.8
Sale price (in dollars per shares) | $ / shares				$ 0.55
Volume weighted average stock price period				30 days
Termination notice period		150 days	120 days
Number of rights of first refusal | item					1
Deferred revenue						$ 300,000
Variable fee (per tonne) | $ / item		11.00	22.00