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Retirement Plans and Postretirement Costs (Details) - USD ($)
$ in Thousands
Jul. 01, 2018
Jul. 02, 2017
Jul. 03, 2016
Amounts Included in Accumulated Other Comprehensive Loss, Net of Tax      
Total $ 18,148 $ 18,750 $ 24,518
Pension and SERP Benefits      
Amounts Included in Accumulated Other Comprehensive Loss, Net of Tax      
Net actuarial loss 16,515    
Total 16,515    
Postretirement      
Amounts Included in Accumulated Other Comprehensive Loss, Net of Tax      
Prior service credit (294)    
Net actuarial loss 1,927    
Total $ 1,633