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Employee Benefit Plans
6 Months Ended
Jun. 30, 2012
Compensation and Retirement Disclosure [Abstract]  
Employee Benefit Plans
Employee Benefit Plans
The Company has one defined benefit pension plan which is frozen that covers certain U.S. hourly and salaried employees. The defined benefit plan provides benefits based primarily on the participants’ years of service and compensation.
The following table sets forth the components of net periodic pension expense for the three and six months ended June 30, 2012 and 2011:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2012
 
2011
 
2012
 
2011
Interest cost
$
552

 
$
603

 
$
1,104

 
$
1,206

Expected return on plan assets
(662
)
 
(644
)
 
(1,324
)
 
(1,288
)
Amortization of net loss
244

 
152

 
487

 
182

Total pension expense
$
134

 
$
111

 
$
267

 
$
100