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Long-Term Debt - Long-Term Debt Components (Details) (Parenthetical)	12 Months Ended
	Jun. 28, 2020
Debt Disclosure [Abstract]
Finance lease obligations, scheduled maturity start date	2020-07
Finance lease obligations, scheduled maturity end date	2027-11

X

- Definition

Finance lease obligations range end month and year.

+ References

No definition available.

+ Details

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

X

- Definition

Finance lease obligations range start month and year.

+ References

No definition available.

+ Details

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

X

- References

No definition available.

+ Details

Name:	us-gaap_DebtDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration