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Income Taxes - Deferred Tax Valuation Allowance Activities (Details) - Valuation Allowance of Deferred Tax Assets [Member] - USD ($) $ in Thousands | 12 Months Ended
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Jun. 28, 2020 | Jun. 28, 2020 | Jun. 30, 2019 | Jun. 24, 2018
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |  |
Balance at beginning of period | $ (26,020) |  | $ (15,143) | $ (17,957)
(Increase) decrease in valuation allowance |  | $ (11,419) | (10,877) | 2,814
Balance at end of period | $ (37,439) | $ (37,439) | $ (26,020) | $ (15,143)

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- Definition Amount of increase (decrease) in the valuation allowance for a specified deferred tax asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=116821951&loc=d3e32123-109318 + Details
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- Definition Amount of valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 + Details
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