Document And Entity Information (USD $)	12 Months Ended
	Jun. 24, 2012	Aug. 20, 2012	Dec. 25, 2011
Document and Entity Information [Abstract]
Entity Registrant Name	UNIFI INC
Document Type	10-K
Current Fiscal Year End Date	--06-24
Entity Common Stock, Shares Outstanding		20,090,094
Entity Public Float			$ 101,476,354
Amendment Flag	false
Entity Central Index Key	0000100726
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Document Period End Date	Jun. 24, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY