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Retirement Plans and Postretirement Costs (Details Textual)
 12 Months Ended
Jul. 02, 2023
USD ($)
Age
Jul. 03, 2022
USD ($)
Jun. 27, 2021
USD ($)
Defined Benefit Plan Disclosure [Line Items]      
Rabbi Trust Assets - SERP $ 2,600,000 $ 3,300,000  
Postretirement plan annual benefit limit for future eligible retirees $ 4,000    
Other postretirement benefits maximum benefit period 5 years    
Health care cost trend rate for next fiscal year 5.60%    
Postretirement death benefit $ 8,000    
Postretirement benefit increase in disability retirees $ 70,000    
Disability retirees age | Age 65    
Decrease in death benefit for disability retirees $ 8,000    
401(K) Plan      
Defined Benefit Plan Disclosure [Line Items]      
Percent of each dollar of eligible employee contributions matched by employer 100.00%    
Employer matching contribution to employee up to participant's eligible contribution 5.00%    
Other Current Assets      
Defined Benefit Plan Disclosure [Line Items]      
Rabbi Trust Assets - SERP   863,000  
Maximum      
Defined Benefit Plan Disclosure [Line Items]      
Postretirement plan annual benefit limit for future eligible retirees $ 4,000    
Supplemental Employee Retirement Plan, Defined Benefit      
Defined Benefit Plan Disclosure [Line Items]      
Percentage of participant's base salary received as Supplemental Retirement Benefits 8.00%    
Vesting period, SERP 5 years    
Cash settled using Rabbi trust assets $ 863,000    
Settlement charge pre tax 217,000    
Projected benefit obligation 2,305,000 3,164,000 $ 2,797,000
Accumulated benefit obligation 2,200,000 2,800,000  
Expected employer contributions in next fiscal year 1,100,000    
Postretirement Benefits      
Defined Benefit Plan Disclosure [Line Items]      
Projected benefit obligation 1,296,000 $ 1,477,000 $ 1,868,000
Expected employer contributions in next fiscal year $ 140,000