Document And Entity Information - USD ($)	12 Months Ended
	Jun. 26, 2016	Aug. 18, 2016	Dec. 24, 2015
Document Information [Line Items]
Entity Registrant Name	UNIFI INC
Entity Central Index Key	0000100726
Trading Symbol	ufi
Current Fiscal Year End Date	--06-26
Entity Filer Category	Accelerated Filer
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Entity Common Stock, Shares Outstanding (in shares)		17,975,945
Entity Public Float			$ 463,197,360
Document Type	10-K
Document Period End Date	Jun. 26, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	FY
Amendment Flag	false