Document And Entity Information - shares
3 Months Ended
Mar. 31, 2019
May 08, 2019
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-Q  
Document Period End Date Mar. 31, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
Emerging Growth Company false  
Entity Small Business true  
Amendment Flag false  
Entity Common Stock, Outstanding (shares)   43,005,159