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Leases - Additional Information (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Jun. 28, 2020 | Jul. 01, 2019
Lessee Lease Description [Line Items] |  |
Operating lease assets | $ 8,940 | $ 9,802
Operating Lease Liabilities | 9,034 | $ 10,105
Property, Plant & Equipment, Net [Member] |  |
Lessee Lease Description [Line Items] |  |
Addition in finance lease assets | $ 727 |
Minimum [Member] |  |
Lessee Lease Description [Line Items] |  |
LesseeOperatingAndFinanceLeaseTermOfContract | 1 year |
Maximum [Member] |  |
Lessee Lease Description [Line Items] |  |
LesseeOperatingAndFinanceLeaseTermOfContract | 15 years |

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- Definition Addition in finance lease assets. + References No definition available. + Details
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Namespace Prefix: | ufi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Lessee operating and finance lease term of contract. + References No definition available. + Details
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Namespace Prefix: | ufi_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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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_LesseeLeaseDescriptionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of lessee's right to use underlying asset under operating lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |