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Document And Entity Information
Oct. 25, 2019
Document Information [Line Items]  
Entity Registrant Name INTERFACE INC
Document Type 8-K
Document Period End Date Oct. 25, 2019
Entity Incorporation, State or Country Code GA
Entity File Number 001-33994
Entity Tax Identification Number 58-1451243
Entity Address, Address Line One 1280 West Peachtree Street NW
Entity Address, City or Town Atlanta
Entity Address, State or Province GA
Entity Address, Postal Zip Code 30309
City Area Code 770
Local Phone Number 437-6800
Title of 12(b) Security Common Stock
Trading Symbol TILE
Security Exchange Name NASDAQ
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Amendment Flag false
Entity Central Index Key 0000715787