Investments in Unconsolidated Affiliates - Schedule of Unaudited, Condensed Balance Sheet Information for Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	Jan. 01, 2023	Oct. 02, 2022	Jul. 03, 2022	Dec. 26, 2021	Sep. 26, 2021	Jun. 27, 2021
Schedule Of Equity Method Investments [Line Items]
Current assets	$ 278,155		$ 352,266
Current liabilities	58,810		108,792
Shareholders’ equity and capital accounts	334,879	$ 348,299	361,449	$ 361,192	$ 360,997	$ 358,419
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule Of Equity Method Investments [Line Items]
Current assets	9,378		10,705
Non-current assets	549		605
Current liabilities	6,644		8,056
Shareholders’ equity and capital accounts	3,283		3,254
UNIFI’s portion of undistributed earnings	$ 2,370		$ 2,013