Investments in Unconsolidated Affiliates - Schedule of Unaudited, Condensed Balance Sheet Information for Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023	Jul. 02, 2023	Apr. 02, 2023	Jan. 01, 2023	Jul. 03, 2022
Schedule Of Equity Method Investments [Line Items]
Current assets	$ 252,180		$ 294,060
Current liabilities	77,723		71,995
Shareholders’ equity and capital accounts	277,809	$ 291,340	323,610	$ 334,908	$ 334,879	$ 361,449
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule Of Equity Method Investments [Line Items]
Current assets	4,658		10,608
Non-current assets	466		494
Current liabilities	2,050		7,304
Shareholders’ equity and capital accounts	3,074		3,798
UNIFI’s portion of undistributed earnings	$ 1,477		$ 2,938