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Note 9 - Other Non-current Assets (Details) - USD ($) $ in Thousands | Sep. 27, 2015 | Jun. 28, 2015
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Disclosure Text Block Supplement [Abstract] |  |
Accumulated Depreciation, Biomass Foundation and Feedstock | $ 75 | $ 55

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- Definition Amount of accumulated depreciation for biomass foundation and feedstock. + References No definition available. + Details
Name: | ufi_AccumulatedDepreciationBiomassFoundationAndFeedstock
Namespace Prefix: | ufi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | us-gaap_DisclosureTextBlockSupplementAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration