Cover page - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	May 26, 2020	Jun. 30, 2019
Cover [Abstract]
Document Type	10-K
Document Period End Date	Dec. 31, 2019
Entity File Number	001-33720
Entity Registrant Name	Remark Holdings, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	33-1135689
Entity Address, Address Line One	800 S Commerce St.
Entity Address, City or Town	Las Vegas
Entity Address, State or Province	NV
Entity Address, Postal Zip Code	89106
City Area Code	702
Local Phone Number	701-9514
Title of 12(b) Security	Common Stock, $0.001 par value per share
Trading Symbol	MARK
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Public Float			$ 34.3
Entity Common Stock, Outstanding		99,354,052
Document Fiscal Year Focus	2019
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Central Index Key	0001368365
Document Annual Report	true
Document Transition Report	false
Current Fiscal Year End Date	--12-31