Revenue Recognition - Disaggregated Revenues and Product Sales for UNIFI (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 28, 2021	Mar. 29, 2020	Mar. 28, 2021	Mar. 29, 2020
Disaggregation Of Revenue [Line Items]
Net sales	$ 178,866	$ 170,994	$ 483,147	$ 520,454
Third-Party Manufacturer [Member]
Disaggregation Of Revenue [Line Items]
Net sales	176,100	169,033	475,087	514,590
Service [Member]
Disaggregation Of Revenue [Line Items]
Net sales	2,766	1,961	8,060	5,864
REPREVE Fiber [Member]
Disaggregation Of Revenue [Line Items]
Net sales	59,171	49,091	169,689	162,469
All Other Products and Services [Member]
Disaggregation Of Revenue [Line Items]
Net sales	$ 119,695	$ 121,903	$ 313,458	$ 357,985