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Income Taxes - Additional Information (Details) $ in Thousands | 3 Months Ended
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Sep. 27, 2020 USD ($)
Income Tax Disclosure [Abstract] |
Discrete tax benefit | $ 4,789
Change in valuation allowance income tax expense | $ 2,127

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- Definition Global intangible low tax income measurement period adjustment income tax expense benefit. + References No definition available. + Details
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Namespace Prefix: | ufi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration