Other Non-Current Assets - Schedule of Unaudited, Condensed Balance Sheet Information for Unconsolidated Affiliates (Details) - USD ($) $ in Thousands	Mar. 27, 2022	Dec. 26, 2021	Jun. 27, 2021	Mar. 28, 2021	Dec. 27, 2020	Jun. 28, 2020
Schedule Of Equity Method Investments [Line Items]
Current assets	$ 358,525		$ 329,067
Current liabilities	114,351		105,423
Shareholders’ equity and capital accounts	377,265	$ 361,192	358,419	$ 335,597	$ 334,873	$ 316,155
Equity Method Investment, Nonconsolidated Investee or Group of Investees [Member]
Schedule Of Equity Method Investments [Line Items]
Current assets	9,263		7,931
Non-current assets	634		659
Current liabilities	6,969		3,967
Shareholders’ equity and capital accounts	2,928		4,623
UNIFI’s portion of undistributed earnings	$ 1,715		$ 2,100