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Employee Benefit Plans
 6 Months Ended
Jun. 30, 2016
Compensation and Retirement Disclosure [Abstract]  
Employee Benefit Plans
Employee Benefit Plans
The Company has a 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 represents the components of net periodic pension expense:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2016

2015
 
2016
 
2015
Interest cost
$
571

 
$
571

 
$
1,142

 
$
1,143

Expected return on plan assets
(697
)
 
(800
)
 
(1,394
)
 
(1,599
)
Amortization of net loss
384

 
357

 
768

 
714

Total net periodic pension expense
$
258

 
$
128

 
$
516

 
$
258