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Employee Benefit Plans
 9 Months Ended
Sep. 30, 2017
Compensation and Retirement Disclosure [Abstract]  
Employee Benefit Plans
Employee Benefit Plans
The Company has a frozen defined benefit pension plan 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 components of net periodic pension expense are as follows:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
 
2017

2016
 
2017
 
2016
Interest cost
$
543

 
$
572

 
$
1,627

 
$
1,714

Expected return on plan assets
(698
)
 
(698
)
 
(2,094
)
 
(2,092
)
Amortization of net loss
310

 
385

 
930

 
1,153

Total net periodic pension expense
$
155

 
$
259

 
$
463

 
$
775



The Company’s funding policy is to contribute at least the minimum funding amounts required by law. The Company contributed $3,000 to its defined benefit pension plan in the third quarter of 2017, and based upon current actuarial estimates, the Company does not expect to contribute to its defined benefit pension plan again until 2018.