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Commitments and Contingencies - Schedule of Costs Incurred Under Purchases and Services Obligations (Details) - USD ($) $ in Thousands | 12 Months Ended
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Jun. 24, 2018 | Jun. 25, 2017 | Jun. 26, 2016
Commitments And Contingencies Disclosure [Abstract] |  |  |
Costs for unconditional purchase obligations | $ 24,777 | $ 26,984 | $ 26,790
Costs for unconditional service obligations | 2,454 | 2,575 | 641
Total | $ 27,231 | $ 29,559 | $ 27,431

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- Definition Costs for unconditional service obligations. + References No definition available. + Details
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Balance Type: | debit
Period Type: | duration

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- Definition The amount purchased during the period under utility purchase contracts. + References No definition available. + Details
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Namespace Prefix: | ufi_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
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- Definition The amount purchased during the period under an unrecorded unconditional purchase obligation (for example, under the take-or-pay or throughput contract). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=77896938&loc=d3e25336-109308 + Details
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