Investments in Unconsolidated Affiliates and Variable Interest Entities - Schedule of Unaudited, Condensed Balance Sheet Information for Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	Jun. 25, 2017	Jun. 26, 2016
Schedule Of Equity Method Investments [Line Items]
Current assets	$ 258,160	$ 256,978
Noncurrent assets	184,457	204,320
Current liabilities	57,977	60,969
Noncurrent liabilities	3,263	3,057
Shareholders’ equity and capital accounts	381,377	397,272
UNIFI’s portion of undistributed earnings	48,164
Parkdale America LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Current assets	247,820	244,197
Noncurrent assets	183,418	203,251
Current liabilities	54,389	56,921
Noncurrent liabilities	3,263	3,057
Shareholders’ equity and capital accounts	373,586	387,470
UNIFI’s portion of undistributed earnings	46,248
UNF and UNF America [Member]
Schedule Of Equity Method Investments [Line Items]
Current assets	10,340	12,781
Noncurrent assets	1,039	1,069
Current liabilities	3,588	4,048
Shareholders’ equity and capital accounts	7,791	$ 9,802
UNIFI’s portion of undistributed earnings	$ 1,916