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Employee Benefit Plans | 3 Months Ended
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Mar. 31, 2016
Compensation and Retirement Disclosure [Abstract] |
Employee Benefit Plans | Employee Benefit Plans The following are components of the net periodic benefit cost for the pension and post-retirement benefit plans maintained by the Company for the three months ended March 31, 2016 and 2015:
| Pension Benefits
(in thousands) | Three months ended March 31,
2016 |  | 2015
Service cost | $ | — |  |  | $ | 55 |
Interest cost | 48 |  |  | 1,209 |
Expected return on plan assets | — |  |  | (1,561 | )
Recognized net actuarial loss | 36 |  |  | 370 |
Benefit cost | $ | 84 |  |  | $ | 73 |
| Post-retirement Benefits
(in thousands) | Three months ended March 31,
2016 |  | 2015
Service cost | $ | 213 |  |  | $ | 240 |
Interest cost | 405 |  |  | 406 |
Amortization of prior service cost | (89 | ) |  | (136 | )
Recognized net actuarial loss | 235 |  |  | 392 |
Benefit cost | $ | 764 |  |  | $ | 902 |

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