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Pension And Severance Benefits
9 Months Ended
Sep. 30, 2012
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract]  
Pension And Severance Benefits
Pension and Severance Benefits
Net pension expense from the company's defined benefit and severance plans is primarily comprised of severance plans covering Central American employees and consists of the following: 
 
Quarter ended September 30,
 
Nine months ended September 30,
(In thousands)
2012
 
2011
 
2012
 
2011
Service cost
$
1,787

 
$
1,689

 
$
5,360

 
$
5,068

Interest on projected benefit obligation
1,247

 
1,343

 
3,746

 
4,038

Expected return on plan assets
(378
)
 
(400
)
 
(1,133
)
 
(1,201
)
Recognized actuarial loss
242

 
198

 
709

 
597

Amortization of prior service cost
32

 
32

 
96

 
96

Defined benefit and severance plan expense
$
2,930

 
$
2,862

 
$
8,778

 
$
8,598