Shareholders' Equity - Schedule of Stockholders Equity (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 26, 2017	Mar. 27, 2016	Mar. 26, 2017	Mar. 27, 2016
Stockholders Equity [Line Items]
Balance (in shares) at June 26, 2016			17,847,416
Balance at June 26, 2016			$ 326,945
Options exercised			2,617
Stock-based compensation			1,849
Excess tax benefit on stock-based compensation plans			1,168
Other comprehensive income, net of tax	$ 1,870	$ 3,784	26	$ (7,197)
Deconsolidation for sale of business			(1,416)
Net income (loss) attributable to Unifi, Inc.	9,177	9,689	23,171	24,178
Net income (loss) attributable to non-controlling interest		(414)	(498)	(923)
Net income (loss) including non-controlling interest	$ 9,177	$ 9,275	$ 22,673	$ 23,255
Balance (in shares) at March 26, 2017	18,216,684		18,216,684
Balance at March 26, 2017	$ 353,862		$ 353,862
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			299
Options exercised			$ 29
Conversion of restricted stock units, shares			70
Conversion of restricted stock units			$ 7
Balance (in shares) at March 26, 2017	18,216		18,216
Balance at March 26, 2017	$ 1,821		$ 1,821
Capital in Excess of Par Value [Member]
Stockholders Equity [Line Items]
Balance at June 26, 2016			45,932
Options exercised			2,588
Conversion of restricted stock units			(7)
Stock-based compensation			1,849
Excess tax benefit on stock-based compensation plans			1,168
Balance at March 26, 2017	51,530		51,530
Retained Earnings [Member]
Stockholders Equity [Line Items]
Balance at June 26, 2016			307,065
Net income (loss) attributable to Unifi, Inc.			23,171
Balance at March 26, 2017	330,236		330,236
Accumulated Other Comprehensive Loss [Member]
Stockholders Equity [Line Items]
Balance at June 26, 2016			(29,751)
Other comprehensive income, net of tax			26
Balance at March 26, 2017	(29,725)		(29,725)
Total Unifi, Inc. Shareholders' Equity [Member]
Stockholders Equity [Line Items]
Balance at June 26, 2016			325,031
Options exercised			2,617
Stock-based compensation			1,849
Excess tax benefit on stock-based compensation plans			1,168
Other comprehensive income, net of tax			26
Net income (loss) attributable to Unifi, Inc.			23,171
Balance at March 26, 2017	$ 353,862		353,862
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)