Quarterly report pursuant to Section 13 or 15(d)

Cover

v3.21.2
Cover - shares
9 Months Ended
Sep. 30, 2021
Oct. 15, 2021
Cover [Abstract]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2021  
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 1770 Hempstead Road  
Entity Address, City or Town Lancaster  
Entity Address, State or Province PA  
Entity Address, Postal Zip Code 17605  
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 Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   21,709,428
Entity Central Index Key 0001655075  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q3  
Amendment Flag false