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Note H - Components of Net Periodic Benefit Cost (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Schedule of Net Benefit Costs [Table Text Block]
   
Three Months Ended June 30,
   
Six Months Ended June 30,
 
In thousands
 
2020
   
2019
   
2020
   
2019
 
Interest cost
  $
1,473
    $
1,813
    $
2,946
    $
3,626
 
Expected return on plan assets
   
(1,384
)    
(1,111
)    
(2,768
)    
(2,222
)
Recognized actuarial loss
   
812
     
733
     
1,624
     
1,466
 
Net periodic benefit cost
  $
901
    $
1,435
    $
1,802
    $
2,870