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Retirement Plans (Tables)
 3 Months Ended
Mar. 31, 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
March 31,
 
(In thousands)
 
2019
  
2018
 
       
Service cost
 
$
359
  
$
368
 
Interest cost
  
320
   
289
 
Expected return on plan assets
  
(231
)
  
(245
)
Recognized actuarial gain
  
(39
)
  
(27
)
Total defined benefit expense
 
$
409
  
$
385