Quarterly Results (Unaudited) - Schedule of Quarterly Financial Data (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended																12 Months Ended
	Jun. 24, 2018		Mar. 25, 2018		Dec. 24, 2017		Sep. 24, 2017		Jun. 25, 2017		Mar. 26, 2017		Dec. 25, 2016		Sep. 25, 2016		Jun. 24, 2018	Jun. 25, 2017	Jun. 26, 2016
Quarterly Financial Data [Abstract]
Net sales	$ 181,325		$ 165,867		$ 167,478		$ 164,242		$ 171,250		$ 160,896		$ 155,155		$ 159,969		$ 678,912	$ 647,270	$ 643,637
Gross profit	23,904	[1]	16,556	[1]	22,676	[1]	23,292	[1]	27,357		21,130		22,130		23,547		86,428	94,164	93,632
Net income including non-controlling interest	10,764		176		11,802		8,960		9,704		9,177		4,354		9,142		31,702	32,377	33,170
Less: net loss attributable to non-controlling interest													(237)		(261)			(498)	(1,245)
Net income attributable to Unifi, Inc.	$ 10,764	[2]	$ 176	[2]	$ 11,802	[2]	$ 8,960	[2]	$ 9,704	[3]	$ 9,177	[3]	$ 4,591	[3]	$ 9,403	[3]	$ 31,702	$ 32,875	$ 34,415
Basic EPS (in dollars per share)	$ 0.59	[4]	$ 0.01	[4]	$ 0.65	[4]	$ 0.49	[4]	$ 0.53	[4]	$ 0.50	[4]	$ 0.25	[4]	$ 0.52	[4]	$ 1.73	$ 1.81	$ 1.93
Diluted EPS (in dollars per share)	$ 0.58	[4]	$ 0.01	[4]	$ 0.63	[4]	$ 0.48	[4]	$ 0.52	[4]	$ 0.50	[4]	$ 0.25	[4]	$ 0.51	[4]	$ 1.70	$ 1.78	$ 1.87

[1] Gross profit for the fiscal quarter ended March 25, 2018 includes the adverse impact of sustained raw material cost increases that could not be effectively offset with corresponding selling price increases.

[2] Net income attributable to Unifi, Inc. for the fiscal quarter ended June 24, 2018 includes the reversal of a $3,380 uncertain tax position relating to certain foreign exchange income applicable to fiscal 2015. Net income attributable to Unifi, Inc. for the fiscal quarter ended December 24, 2017 includes the reversal of a $3,807 valuation allowance on certain historical NOLs in connection with a tax status change unrelated to the federal tax reform legislation signed into law in December 2017.

[3] Net income attributable to Unifi, Inc. for the fiscal quarter ended December 25, 2016 includes a loss on sale of business of $1,662.

[4] Income per share is computed independently for each of the periods presented. The sum of the income per share amounts for the fiscal quarters may not equal the total for the fiscal year.