Investments in Unconsolidated Affiliates and Variable Interest Entities - Schedule of Unaudited, Condensed Balance Sheet Information for Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jun. 24, 2018
Schedule Of Equity Method Investments [Line Items]
Current assets	$ 305,423	$ 297,281
Noncurrent assets	158,765	163,117
Current liabilities	72,350	74,748
Noncurrent liabilities	3,321	3,389
Shareholders’ equity and capital accounts	388,517	382,261
UNIFI’s portion of undistributed earnings	44,492	42,316
Parkdale America LLC [Member]
Schedule Of Equity Method Investments [Line Items]
Current assets	298,563	289,683
Noncurrent assets	158,033	162,242
Current liabilities	69,389	71,026
Noncurrent liabilities	3,321	3,389
Shareholders’ equity and capital accounts	383,886	377,510
UNIFI’s portion of undistributed earnings	43,452	41,429
UNF and UNF America [Member]
Schedule Of Equity Method Investments [Line Items]
Current assets	6,860	7,598
Noncurrent assets	732	875
Current liabilities	2,961	3,722
Shareholders’ equity and capital accounts	4,631	4,751
UNIFI’s portion of undistributed earnings	$ 1,040	$ 887