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Note G - Pension and Other Postretirement Benefit Plans (Tables)
 6 Months Ended
Dec. 29, 2017
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
   
For the Quarter Ended
    
For the Two Quarters Ended
  
   
December 29, 2017
    
December 30, 2016
    
December 29, 2017
    
December 30, 2016
  
Pension Benefits:
                                
Service cost
   $
241
     $
259
     $
503
     $
480
  
Interest cost
    
1,062
      
1,118
      
2,136
      
2,243
  
Expected return on plan assets
    
(1,516
 )    
(1,457
 )    
(3,041
 )    
(2,899
 )
Amortization of transition obligation
    
9
      
9
      
18
      
18
  
Amortization of prior service cost
    
1
      
1
      
2
      
2
  
Amortization of actuarial net loss
    
759
      
899
      
1,518
      
1,798
  
Net periodic benefit cost
   $
556
     $
829
     $
1,136
     $
1,642
  
                                 
Postretirement Benefits:
                                
Service cost
   $
5
     $
6
     $
10
     $
12
  
Interest cost
    
77
      
122
      
169
      
244
  
Amortization of actuarial net loss
    
(59
 )    
182
      
(56
 )    
364
  
Net periodic benefit cost
   $
23
     $
310
     $
123
     $
620