XML 195 R1.htm IDEA: XBRL DOCUMENT v3.20.2
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2020
Oct. 31, 2020
Cover [Abstract]    
Entity Registrant Name GlassBridge Enterprises, Inc.  
Entity Central Index Key 0001014111  
Document Type 10-Q  
Document Period End Date Sep. 30, 2020  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business flag true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   25,170
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2020