Document And Entity Information - shares
9 Months Ended
Sep. 30, 2017
Nov. 07, 2017
Document And Entity Information    
Entity Registrant Name RMG Networks Holding Corp  
Document Type 10-Q  
Current Fiscal Year End Date --12-31  
Amendment Flag false  
Entity Central Index Key 0001512074  
Entity Current Reporting Status Yes  
Entity Voluntary Filers No  
Entity Filer Category Smaller Reporting Company  
Entity Well-known Seasoned Issuer No  
Document Period End Date Sep. 30, 2017  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q3  
Entity Common Stock, Shares Outstanding   11,156,257