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Note I - Pension and Other Postretirement Benefit Plans (Tables)
 6 Months Ended
Dec. 28, 2018
Notes Tables  
Schedule of Net Funded Status [Table Text Block]
   
For the Quarter Ended
    
For the Two Quarters Ended
  
   
December 28, 2018
    
December 29, 2017
    
December 28, 2018
    
December 29, 2017
  
Pension Benefits:
                                
Service cost
   $
251
     $
241
     $
497
     $
503
  
Interest cost
    
1,083
      
1,062
      
2,175
      
2,136
  
Expected return on plan assets
    
(1,333
 )    
(1,516
 )    
(2,664
 )    
(3,041
 )
Amortization of transition obligation
    
9
      
9
      
17
      
18
  
Amortization of prior service cost
    
1
      
1
      
2
      
2
  
Amortization of actuarial net loss
    
678
      
759
      
1,355
      
1,518
  
Net periodic benefit cost
   $
689
     $
556
     $
1,382
     $
1,136
  
                                 
Postretirement Benefits:
                                
Service cost
   $
5
     $
5
     $
9
     $
10
  
Interest cost
    
76
      
77
      
152
      
169
  
Amortization of actuarial net loss
    
(69
 )    
(59
 )    
(137
 )    
(56
 )
Net periodic benefit cost
   $
12
     $
23
     $
24
     $
123