Document And Entity Information - shares	6 Months Ended
	Dec. 25, 2016	Jan. 26, 2017
Document And Entity Information [Abstract]
Entity Registrant Name	UNIFI INC
Entity Central Index Key	0000100726
Trading Symbol	ufi
Current Fiscal Year End Date	--06-25
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding (in shares)		18,200,018
Document Type	10-Q
Document Period End Date	Dec. 25, 2016
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	Q2
Amendment Flag	false