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Retirement Plans (Tables)
 9 Months Ended
Sep. 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
September 30,
    
Nine Months Ended
September 30,
  
(In thousands)
  
2020
    
2019
    
2020
    
2019
  
                         
Service cost
  
$
400
    
$
358
    
$
1,196
    
$
1,076
  
Interest cost
    
256
      
315
      
763
      
954
  
Expected return on plan assets
    
(209
)
    
(224
)
    
(622
)
    
(684
)
Recognized actuarial loss (gain)
    
16
      
(40
)
    
47
      
(118
)
Total defined benefit expense
  
$
463
    
$
409
    
$
1,384
    
$
1,228