Long-Term Debt - Long-Term Debt Components (Details) (Parenthetical)	6 Months Ended
Dec. 27, 2020
Debt Disclosure [Abstract]
Finance lease obligations, scheduled maturity start date	2022-05
Finance lease obligations, scheduled maturity end date	2027-11

Finance lease obligations range start month and year.

No definition available.

Name:	ufi_FinanceLeaseObligationsRangeStartMonthAndYear
Namespace Prefix:	ufi_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration