Commitments and Contingencies (Details) $ in Thousands, T in Millions		3 Months Ended	6 Months Ended
	Sep. 29, 2020 USD ($)	Jun. 30, 2022 USD ($) T	Jun. 30, 2022 USD ($) T	Dec. 31, 2021 USD ($)
Unrecorded Unconditional Purchase Obligation [Line Items]
Royalty payment, percentage of net profit		4.00%	4.00%
Royalty payment, annual advance		$ 120	$ 120
Royalty payment, additional incremental payment		$ 120	$ 120
Royalty payment, annual tons mined threshold | T		5.0	5.0
Royalty payment, maximum lease payments		$ 7,600	$ 7,600
Payments to acquire royalty interests in mining properties			$ 3,000
Proceeds from sale of royalty to Sprott	$ 30,000
Smelter royalty obligation, percentage	1.50%
Royalty obligation, metal price discount rate		5.00%	5.00%
Private Placement
Unrecorded Unconditional Purchase Obligation [Line Items]
Financial advisor to settlement amount		$ 3,500
Liability management percentage		50.00%	50.00%
Sale of stock, advisory fee, private placement offering percentage		50.00%	50.00%
Royalty obligation
Unrecorded Unconditional Purchase Obligation [Line Items]
Royalty obligation, fair value		$ 154,000	$ 154,000	$ 154,000
Other assets, noncurrent
Unrecorded Unconditional Purchase Obligation [Line Items]
Payments to acquire royalty interests in mining properties			$ 600