Investments in Unconsolidated Affiliates and Variable Interest Entities - Schedule of Unaudited, Condensed Balance Sheet Information for Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	Jun. 24, 2018	Jun. 25, 2017
Schedule Of Equity Method Investments [Line Items]
Current assets	$ 297,281	$ 258,160
Noncurrent assets	163,117	184,457
Current liabilities	74,748	57,977
Noncurrent liabilities	3,389	3,263
Shareholders’ equity and capital accounts	382,261	381,377
UNIFI’s portion of undistributed earnings	42,316
Parkdale America LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Current assets	289,683	247,820
Noncurrent assets	162,242	183,418
Current liabilities	71,026	54,389
Noncurrent liabilities	3,389	3,263
Shareholders’ equity and capital accounts	377,510	373,586
UNIFI’s portion of undistributed earnings	41,429
UNF and UNF America [Member]
Schedule Of Equity Method Investments [Line Items]
Current assets	7,598	10,340
Noncurrent assets	875	1,039
Current liabilities	3,722	3,588
Shareholders’ equity and capital accounts	4,751	$ 7,791
UNIFI’s portion of undistributed earnings	$ 887