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Retirement Plans (Tables)
 6 Months Ended
Jun. 30, 2020
Retirement Plans [Abstract]  
Annual Benefit Cost
The Company’s components of annual benefit cost for the defined benefit plans for the periods presented are as follows:

  
Three Months Ended
June 30,
    
Six Months Ended
June 30,
  
(In thousands)
  
2020
    
2019
    
2020
    
2019
  
                         
Service cost
  
$
396
    
$
359
    
$
796
    
$
718
  
Interest cost
    
251
      
319
      
507
      
639
  
Expected return on plan assets
    
(204
)
    
(229
)
    
(413
)
    
(460
)
Recognized actuarial loss (gain)
    
15
      
(39
)
    
31
      
(78
)
Total defined benefit expense
  
$
458
    
$
410
    
$
921
    
$
819