Restricted Cash - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Restricted Cash and Cash Equivalents Items [Line Items]
Interest income	$ 2,100	$ 826	$ 6,159	$ 846
Total	35,087		35,087		$ 33,982
Restricted Cash
Restricted Cash and Cash Equivalents Items [Line Items]
Interest income	400	$ 0	1,100	$ 0
Reclamation and other surety bond cash collateral
Restricted Cash and Cash Equivalents Items [Line Items]
Total	35,034		35,034		33,929
Surety bond
Restricted Cash and Cash Equivalents Items [Line Items]
Guarantor obligations	58,700		58,700		58,700
Hycroft Mine
Restricted Cash and Cash Equivalents Items [Line Items]
Guarantor obligations	$ 58,300		$ 58,300		$ 58,300