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Retirement Plans and Postretirement Costs (Details 3) - USD ($)
$ in Thousands
Jul. 01, 2018
Jul. 02, 2017
Pension    
Accumulated Benefit Obligations and Projected Benefit Obligations    
Accumulated benefit obligation $ 96,919 $ 99,442
Projected benefit obligation 96,919 99,442
SERP    
Accumulated Benefit Obligations and Projected Benefit Obligations    
Accumulated benefit obligation 1,749 1,591
Projected benefit obligation $ 1,916 $ 1,824