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Retirement Plans and Postretirement Costs (Details 9) - USD ($) $ in Thousands | 12 Months Ended
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Jul. 01, 2018 | Jul. 02, 2017 | Jul. 03, 2016
Compensation And Retirement Disclosure [Abstract] |  |  |
Employer contribution defined contribution plan | $ 1,793 | $ 1,805 | $ 1,783

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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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