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Retirement Plans (Tables)
 9 Months Ended
Sep. 30, 2019
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)
  
2019
    
2018
    
2019
    
2018
  
                         
Service cost
  
$
358
    
$
366
    
$
1,076
    
$
1,100
  
Interest cost
    
315
      
282
      
954
      
857
  
Expected return on plan assets
    
(224
)
    
(236
)
    
(684
)
    
(722
)
Recognized actuarial gain
    
(40
)
    
(27
)
    
(118
)
    
(81
)
                                 
Total defined benefit expense
  
$
409
    
$
385
    
$
1,228
    
$
1,154