Segment Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Segment Reporting Information [Line Items]
Revenues	$ 19,036,000	$ 11,146,000
Cost of sales	29,402,000	23,890,000
Other operating costs	4,389,000	2,099,000
Loss from operations	(14,755,000)	(14,843,000)
Interest expense - Note 9	(4,449,000)	(19,887,000)
Fair value adjustment to warrants - Note 19	9,493,000	0
Interest income	23,000	112,000
Loss before income taxes	(9,688,000)	(34,618,000)
Income taxes - Note 16	0	0
Net loss	(9,688,000)	(34,618,000)
Hycroft Mine
Segment Reporting Information [Line Items]
Revenues	19,036,000	11,146,000
Cost of sales	29,402,000	23,890,000
Other operating costs	595,000	93,000
Loss from operations	(10,961,000)	(12,837,000)
Interest expense - Note 9	0	(85,000)
Fair value adjustment to warrants - Note 19	0	0
Interest income	23,000	112,000
Loss before income taxes	(10,938,000)	(12,810,000)
Income taxes - Note 16	0	0
Net loss	(10,938,000)	(12,810,000)
Corporate and Other
Segment Reporting Information [Line Items]
Revenues	0	0
Cost of sales	0	0
Other operating costs	3,794,000	2,006,000
Loss from operations	(3,794,000)	(2,006,000)
Interest expense - Note 9	(4,449,000)	(19,802,000)
Fair value adjustment to warrants - Note 19	9,493,000	0
Interest income	0	0
Loss before income taxes	1,250,000	(21,808,000)
Income taxes - Note 16	0	0
Net loss	$ 1,250,000	$ (21,808,000)