Investments in Unconsolidated Affiliates and Variable Interest Entities - Schedule of Unaudited, Condensed Balance Sheet Information for Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 24, 2018
Schedule Of Equity Method Investments [Line Items]
Current assets	$ 306,828	$ 297,281
Noncurrent assets	159,000	163,117
Current liabilities	74,944	74,748
Noncurrent liabilities	3,252	3,389
Shareholders’ equity and capital accounts	387,632	382,261
UNIFI’s portion of undistributed earnings	44,164
Parkdale America LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Current assets	299,610	289,683
Noncurrent assets	158,304	162,242
Current liabilities	70,875	71,026
Noncurrent liabilities	3,252	3,389
Shareholders’ equity and capital accounts	383,787	377,510
UNIFI’s portion of undistributed earnings	43,343
UNF and UNF America [Member]
Schedule Of Equity Method Investments [Line Items]
Current assets	7,218	7,598
Noncurrent assets	696	875
Current liabilities	4,069	3,722
Shareholders’ equity and capital accounts	3,845	$ 4,751
UNIFI’s portion of undistributed earnings	$ 821