Document And Entity Information - shares	6 Months Ended
	Jan. 01, 2023	Feb. 06, 2023
Cover [Abstract]
Entity Registrant Name	UNIFI, INC.
Entity Central Index Key	0000100726
Entity File Number	1-10542
Entity Tax Identification Number	11-2165495
Trading Symbol	UFI
Entity Incorporation, State or Country Code	NY
Current Fiscal Year End Date	--07-03
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Jan. 01, 2023
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Title of 12(b) Security	Common Stock, par value $0.10 per share
Security Exchange Name	NYSE
Entity Address, Address Line One	7201 West Friendly Avenue
Entity Address, City or Town	Greensboro
Entity Address, State or Province	NC
Entity Address, Postal Zip Code	27410
City Area Code	336
Local Phone Number	294-4410
Document Quarterly Report	true
Document Transition Report	false
Entity Common Stock, Shares Outstanding (in shares)		18,051,505