v3.8.0.1
Document and Entity Information - shares
3 Months Ended
Mar. 31, 2018
Apr. 30, 2018
Entity Registrant Name A. H. Belo Corp  
Entity Central Index Key 0001413898  
Document Type 10-Q  
Document Period End Date Mar. 31, 2018  
Amendment Flag false  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Trading Symbol ahc  
Series A [Member]    
Entity Common Stock, Shares Outstanding   19,241,684
Series B [Member]    
Entity Common Stock, Shares Outstanding   2,469,635