v3.19.1
Document And Entity Information - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Mar. 28, 2019
Jun. 30, 2018
Document And Entity Information [Abstract]      
Entity Registrant Name Remark Holdings, Inc.    
Entity Central Index Key 0001368365    
Current Fiscal Year End Date --12-31    
Entity Filer Category Accelerated Filer    
Document Type 10-K    
Document Period End Date Dec. 31, 2018    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Emerging Growth Company false    
Entity Small Business true    
Entity Shell Company false    
Entity Common Stock, Outstanding   40,722,229  
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Public Float     $ 106.8