v3.8.0.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2018
Apr. 25, 2018
Entity Registrant Name Ascent Capital Group, Inc.  
Entity Central Index Key 0001437106  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Document Type 10-Q  
Document Period End Date Mar. 31, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Series A Common Stock    
Entity Common Stock, Shares Outstanding (in shares)   12,017,149
Series B Common Stock    
Entity Common Stock, Shares Outstanding (in shares)   381,528