Consolidated Statements of Income - USD ($) $ in Thousands	3 Months Ended																12 Months Ended
	Jun. 30, 2019		Mar. 31, 2019		Dec. 30, 2018		Sep. 30, 2018		Jun. 24, 2018		Mar. 25, 2018		Dec. 24, 2017		Sep. 24, 2017		Jun. 30, 2019	Jun. 24, 2018	Jun. 25, 2017
Income Statement [Abstract]
Net sales	$ 179,493	[1]	$ 179,989	[1]	$ 167,711	[1]	$ 181,611	[1]	$ 181,325		$ 165,867		$ 167,478		$ 164,242		$ 708,804	$ 678,912	$ 647,270
Cost of sales																	642,496	592,484	553,106
Gross profit	18,342	[2]	13,791	[2]	14,156	[2]	20,019	[2]	23,904	[3]	16,556	[3]	22,676	[3]	23,292	[3]	66,308	86,428	94,164
Selling, general and administrative expenses																	52,690	56,077	50,829
Provision (benefit) for bad debts																	308	(38)	(123)
Other operating expense (income), net																	2,350	1,590	(310)
Operating income																	10,960	28,799	43,768
Interest income																	(628)	(560)	(517)
Interest expense																	5,414	4,935	3,578
Loss on extinguishment of debt																	131
Loss on sale of business																			1,662
Equity in earnings of unconsolidated affiliates																	(3,968)	(5,787)	(4,230)
Income before income taxes																	10,011	30,211	43,275
Provision (benefit) for income taxes																	7,555	(1,491)	10,898
Net income including non-controlling interest																	2,456	31,702	32,377
Less: net loss attributable to non-controlling interest																			(498)
Net income attributable to Unifi, Inc.	$ 1,002	[4]	$ (1,529)	[4]	$ 1,171	[4]	$ 1,812	[4]	$ 10,764	[5]	$ 176	[5]	$ 11,802	[5]	$ 8,960	[5]	$ 2,456	$ 31,702	$ 32,875
Net income attributable to Unifi, Inc. per common share:
Basic	$ 0.05	[6]	$ (0.08)	[6]	$ 0.06	[6]	$ 0.10	[6]	$ 0.59	[6]	$ 0.01	[6]	$ 0.65	[6]	$ 0.49	[6]	$ 0.13	$ 1.73	$ 1.81
Diluted	$ 0.05	[6]	$ (0.08)	[6]	$ 0.06	[6]	$ 0.10	[6]	$ 0.58	[6]	$ 0.01	[6]	$ 0.63	[6]	$ 0.48	[6]	$ 0.13	$ 1.70	$ 1.78

[1] The fiscal quarter ended September 30, 2018 is comprised of fourteen weeks.

[2] Gross profit for the fiscal quarter ended December 30, 2018 includes the adverse impact of a raw material cost spike that could not be effectively offset with timely corresponding selling price increases. Gross profit for the fiscal quarters ended December 30, 2018, March 31, 2019 and June 30, 2019 includes the adverse impact of significant competitive pressure caused by elevated levels of polyester textured yarn imports.

[3] 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 timely corresponding selling price increases.

[4] Net income for the fiscal quarter ended June 30, 2019 includes severance charges for involuntary terminations.

[5] Net income for the fiscal quarter ended June 24, 2018 includes the reversal of a $3,380 uncertain tax position relating to certain income applicable to fiscal 2015. Net income for the fiscal quarter ended December 24, 2017 includes the reversal of a $3,807 valuation allowance on certain historical NOLs.

[6] 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.