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Retirement and Pension Plans (Tables)
3 Months Ended
Mar. 31, 2020
Retirement Benefits [Abstract]  
Components of Net Periodic Pension Benefit Expense (Income)
The components of net periodic pension benefit expense (income) were as follows:
 
Three Months Ended
 
 
March 31,
 
 
2020
 
 
2019
 
 
(In thousands)
 
Defined benefit plans:
 
 
 
 
 
 
Service cost
 
$
1,950
 
  $
1,713
 
Interest cost
 
 
5,636
 
   
6,762
 
Expected return on plan assets
 
 
(13,650
)
   
(13,126
)
Amortization of net actuarial loss and other
 
 
3,976
 
   
3,287
 
                 
Pension income
 
 
(2,088
)
   
(1,364
)
                 
Other plans:
 
 
 
 
 
 
Defined contribution plans
 
 
10,025
 
   
9,108
 
Foreign plans and other
 
 
2,041
 
   
1,562
 
                 
Total other plans
 
 
12,066
 
   
10,670
 
                 
Total net pension expense
 
$
9,978
 
  $
9,306