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Employee Benefit Plans | 9 Months Ended
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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.

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