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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. 24, 2018 | Jun. 25, 2017 | Jun. 26, 2016
Valuation And Qualifying Accounts Disclosure [Line Items] |  |  |
Balance at beginning of period | $ (17,957) | $ (13,550) | $ (15,606)
Decrease (increase) in valuation allowance | 2,814 | (4,407) | 2,056
Balance at end of period | $ (15,143) | $ (17,957) | $ (13,550)

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