v3.19.1
Document and Entity Information - USD ($)
12 Months Ended
Dec. 31, 2018
Mar. 05, 2019
Jun. 30, 2018
Entity Registrant Name A. H. Belo Corp    
Entity Central Index Key 0001413898    
Document Type 10-K    
Document Period End Date Dec. 31, 2018    
Amendment Flag false    
Document Fiscal Year Focus 2018    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Entity Filer Category Smaller Reporting Accelerated Filer    
Entity Public Float     $ 88,576,679
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Voluntary Filers No    
Trading Symbol ahc    
Series A [Member]      
Entity Common Stock, Shares Outstanding   19,079,540  
Series B [Member]      
Entity Common Stock, Shares Outstanding   2,469,555