Quarterly report pursuant to Section 13 or 15(d)


Cover - shares
6 Months Ended
Jun. 30, 2019
Jul. 31, 2019
Cover page.    
Document Type 10-Q  
Document Period End Date Jun. 30, 2019  
Document Quarterly Report true  
Document Transition Report false  
Entity File Number 001-37589  
Entity Registrant Name ARMSTRONG FLOORING, INC.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 47-4303305  
Entity Address, Address Line One        2500 Columbia Avenue,  
Entity Address, City or Town Lancaster,  
Entity Address, State or Province PA  
Entity Address, Postal Zip Code 17604  
City Area Code (717)  
Local Phone Number 672-9611  
Title of 12(b) Security Common Stock, $0.0001 par value  
Trading Symbol AFI  
Security Exchange Name NYSE  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Accelerated Filer  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   21,495,973
Entity Central Index Key 0001655075  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q2