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v3.21.1

Long-Term Debt - Long-Term Debt Components (Details) (Parenthetical) | 9 Months Ended
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Mar. 28, 2021
Debt Disclosure [Abstract] |
Finance lease obligations, scheduled maturity start date | 2022-05
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