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Pension And Severance Benefits
12 Months Ended
Dec. 31, 2013
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 March 31,
(In thousands)
2013
 
2012
Service cost
$
1,864

 
$
1,808

Interest on projected benefit obligation
1,297

 
1,291

Expected return on plan assets
(332
)
 
(429
)
Recognized actuarial loss
306

 
217

Amortization of prior service cost
32

 
48

Defined benefit and severance plan expense
$
3,167

 
$
2,935