Segment Information (Details) - USD ($)	3 Months Ended				6 Months Ended
	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting Information [Line Items]
Revenues	$ 36,001,000		$ 7,636,000		$ 55,037,000	$ 18,760,000
Cost of sales	33,501,000		31,863,000		62,903,000	55,731,000
Other operating costs	6,289,000		10,526,000		10,678,000	12,625,000
Loss from operations	(3,789,000)		(34,753,000)		(18,544,000)	(49,596,000)
Interest expense - Note 9	(5,298,000)		(15,072,000)		(9,747,000)	(34,959,000)
Fair value adjustment to warrants - Notes 11 and 18	651,000		(922,000)		10,144,000	(922,000)
Interest income	9,000		35,000		32,000	147,000
Loss before income taxes	(8,427,000)		(50,712,000)		(18,115,000)	(85,330,000)
Income taxes - Note 15	0		0		0	0
Net loss	(8,427,000)	$ (9,688,000)	(50,712,000)	$ (34,618,000)	(18,115,000)	(85,330,000)
Hycroft Mine
Segment Reporting Information [Line Items]
Revenues	36,001,000		7,636,000		55,037,000	18,760,000
Cost of sales	33,501,000		31,863,000		62,903,000	55,731,000
Other operating costs	1,125,000		94,000		1,720,000	187,000
Loss from operations	1,375,000		(24,321,000)		(9,586,000)	(37,158,000)
Interest expense - Note 9	0		(56,000)		0	(141,000)
Fair value adjustment to warrants - Notes 11 and 18	0		0		0	0
Interest income	9,000		35,000		32,000	147,000
Loss before income taxes	1,384,000		(24,342,000)		(9,554,000)	(37,152,000)
Income taxes - Note 15	0		0		0	0
Net loss	1,384,000		(24,342,000)		(9,554,000)	(37,152,000)
Corporate and Other
Segment Reporting Information [Line Items]
Revenues	0		0		0	0
Cost of sales	0		0		0	0
Other operating costs	5,164,000		10,432,000		8,958,000	12,438,000
Loss from operations	(5,164,000)		(10,432,000)		(8,958,000)	(12,438,000)
Interest expense - Note 9	(5,298,000)		(15,016,000)		(9,747,000)	(34,818,000)
Fair value adjustment to warrants - Notes 11 and 18	651,000		(922,000)		10,144,000	(922,000)
Interest income	0		0		0	0
Loss before income taxes	(9,811,000)		(26,370,000)		(8,561,000)	(48,178,000)
Income taxes - Note 15	0		0		0	0
Net loss	$ (9,811,000)		$ (26,370,000)		$ (8,561,000)	$ (48,178,000)