Shareholders' Equity - Schedule of Stockholders Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 25, 2016	Dec. 27, 2015	Dec. 25, 2016	Dec. 27, 2015
Stockholders Equity [Line Items]
Balance (in shares) at June 26, 2016			17,847,416
Balance at June 26, 2016			$ 326,945
Options exercised			2,481
Stock-based compensation			1,402
Excess tax benefit on stock-based compensation plans			1,111
Other comprehensive loss, net of tax	$ (1,041)	$ 437	(1,844)	$ (10,981)
Deconsolidation for sale of business			(1,416)
Net income (loss) attributable to Unifi, Inc.	4,591	6,464	13,994	14,489
Net income (loss) attributable to non-controlling interest	(237)	(270)	(498)	(509)
Net income (loss) including non-controlling interest	$ 4,354	$ 6,194	$ 13,496	$ 13,980
Balance (in shares) at December 25, 2016	18,200,018		18,200,018
Balance at December 25, 2016	$ 342,175		$ 342,175
Common Stock [Member]
Stockholders Equity [Line Items]
Balance (in shares) at June 26, 2016			17,847
Balance at June 26, 2016			$ 1,785
Options exercised, shares			283
Options exercised			$ 28
Conversion of restricted stock units, shares			70
Conversion of restricted stock units			$ 7
Balance (in shares) at December 25, 2016	18,200		18,200
Balance at December 25, 2016	$ 1,820		$ 1,820
Capital in Excess of Par Value [Member]
Stockholders Equity [Line Items]
Balance at June 26, 2016			45,932
Options exercised			2,453
Conversion of restricted stock units			(7)
Stock-based compensation			1,402
Excess tax benefit on stock-based compensation plans			1,111
Balance at December 25, 2016	50,891		50,891
Retained Earnings [Member]
Stockholders Equity [Line Items]
Balance at June 26, 2016			307,065
Net income (loss) attributable to Unifi, Inc.			13,994
Balance at December 25, 2016	321,059		321,059
Accumulated Other Comprehensive Loss [Member]
Stockholders Equity [Line Items]
Balance at June 26, 2016			(29,751)
Other comprehensive loss, net of tax			(1,844)
Balance at December 25, 2016	(31,595)		(31,595)
Total Unifi, Inc. Shareholders' Equity [Member]
Stockholders Equity [Line Items]
Balance at June 26, 2016			325,031
Options exercised			2,481
Stock-based compensation			1,402
Excess tax benefit on stock-based compensation plans			1,111
Other comprehensive loss, net of tax			(1,844)
Net income (loss) attributable to Unifi, Inc.			13,994
Balance at December 25, 2016	$ 342,175		342,175
Noncontrolling Interest [Member]
Stockholders Equity [Line Items]
Balance at June 26, 2016			1,914
Deconsolidation for sale of business			(1,416)
Net income (loss) attributable to non-controlling interest			$ (498)