Investments in Unconsolidated Affiliates - Schedule of Unaudited, Condensed Balance Sheet Information for Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Oct. 01, 2023	Jul. 02, 2023	Jan. 01, 2023	Oct. 02, 2022	Jul. 03, 2022
Schedule Of Equity Method Investments [Line Items]
Current assets	$ 255,949		$ 294,060
Current liabilities	68,471		71,995
Shareholders’ equity and capital accounts	291,340	$ 305,029	323,610	$ 334,879	$ 348,299	$ 361,449
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule Of Equity Method Investments [Line Items]
Current assets	9,363		10,608
Non-current assets	473		494
Current liabilities	3,634		7,304
Shareholders’ equity and capital accounts	6,202		3,798
UNIFI’s portion of undistributed earnings	$ 3,042		$ 2,938