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Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands | Jun. 27, 2021 | Jun. 28, 2020 | Jun. 30, 2019
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Components Of Deferred Tax Assets And Liabilities [Abstract] |  |  |
Investments, including unconsolidated affiliates |  | $ 3,995 |
Tax credits | $ 18,711 | 19,457 |
Capital loss carryforwards | 17,429 | 13,791 |
Accrued compensation | 4,056 | 1,777 |
NOL carryforwards | 3,043 | 3,907 |
Research and development costs | 6,934 | 6,073 |
Other items | 4,815 | 6,652 |
Total gross deferred tax assets | 54,988 | 55,652 |
Valuation allowance | (36,980) | (37,439) | $ (26,020)
Net deferred tax assets | 18,008 | 18,213 |
PP&E | (16,045) | (17,733) |
Unremitted earnings | (3,769) | (510) |
Recovery of non-income taxes | (3,664) |  |
Other | (8) | (167) |
Total deferred tax liabilities | (23,486) | (18,410) |
Net deferred tax liabilities | $ (5,478) | $ (197) |

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