Cover - shares	6 Months Ended
	Jun. 30, 2021	Aug. 03, 2021
Document Information [Line Items]
Document Type	10-Q
Document Period End Date	Jun. 30, 2021
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2021
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-38387
Entity Registrant Name	HYCROFT MINING HOLDING CORPORATION
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	82-2657796
Entity Address, Address Line One	8181 E. Tufts Avenue, Suite 510
Entity Address, City or Town	Denver
Entity Address, State or Province	CO
Entity Address, Postal Zip Code	80237
City Area Code	(303)
Local Phone Number	253-3267
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		59,977,318
Amendment Flag	false
Entity Central Index Key	0001718405
Class A common stock
Document Information [Line Items]
Title of 12(b) Security	Class A common stock, par value $0.0001 per share
Trading Symbol	HYMC
Security Exchange Name	NASDAQ
Warrants to purchase common stock
Document Information [Line Items]
Title of 12(b) Security	Warrants to purchase common stock
Trading Symbol	HYMCW
Security Exchange Name	NASDAQ
Warrants to purchase common stock
Document Information [Line Items]
Title of 12(b) Security	Warrants to purchase common stock
Trading Symbol	HYMCZ
Security Exchange Name	NASDAQ
Warrants to purchase common stock
Document Information [Line Items]
Title of 12(b) Security	Warrants to purchase common stock
Trading Symbol	HYMCL