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Revenue Recognition - Disaggregated Revenues for UNIFI (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
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Jun. 28, 2020 | [1] | Mar. 29, 2020 | [1] | Dec. 29, 2019 | [1] | Sep. 29, 2019 | [1] | Jun. 30, 2019 | [2] | Mar. 31, 2019 | [2] | Dec. 30, 2018 | [2] | Sep. 30, 2018 | [2] | Jun. 28, 2020 | Jun. 28, 2020 | Jun. 30, 2019 | Jun. 24, 2018
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 86,055 | $ 170,994 | $ 169,511 | $ 179,949 | $ 179,493 | $ 179,989 | $ 167,711 | $ 181,611 | $ 606,509 | $ 606,509 | $ 708,804 | $ 678,912
Third-Party Manufacturer [Member] |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | 598,510 | 700,077 | 670,239
Service [Member] |  |  |  |  |  |  |  |  |  |  |  |
Disaggregation Of Revenue [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  | $ 7,999 | $ 8,727 | $ 8,673
[1] | Net sales for the fiscal quarter ended June 28, 2020, includes the impact of global demand declines and decreased economic activity caused by the COVID-19 pandemic
[2] | The fiscal quarter ended September 30, 2018 was comprised of fourteen weeks.

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- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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