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Defined Contribution Plans - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended |
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Jul. 03, 2022 | Jun. 27, 2021
Defined Contribution Plan Disclosure [Line Items] |  |
Total DCP obligation | $ 2,359 |
Predecessor SERP |  | $ 3,177
Contribution for the First 3% [Member] | Retirement Savings Plan [Member] |  |
Defined Contribution Plan Disclosure [Line Items] |  |
Defined contribution plan, employer matching contribution percentage | 100.00% |
Defined contribution plan, employer matching contribution, percent of employees' gross pay | 3.00% |
Contribution for the Next 2% [Member] | Retirement Savings Plan [Member] |  |
Defined Contribution Plan Disclosure [Line Items] |  |
Defined contribution plan, employer matching contribution percentage | 50.00% |
Defined contribution plan, employer matching contribution, percent of employees' gross pay | 2.00% |

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- Definition Predecessor SERP. + References No definition available. + Details
Name: | ufi_PredecessorSERP
Namespace Prefix: | ufi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date. + References No definition available. + Details
Name: | us-gaap_DeferredCompensationLiabilityCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Percentage employer matches of the employee's percentage contribution matched. + References No definition available. + Details
Name: | us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | srt_StatementScenarioAxis=ufi_ContributionForTheFirstThreePercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RetirementPlanNameAxis=ufi_RetirementSavingsPlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | srt_StatementScenarioAxis=ufi_ContributionForTheNextTwoPercentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |