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Employee Benefit Plans | 6 Months Ended
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Jun. 30, 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 and six months ended June 30, 2016 and 2015:
| Pension Benefits
(in thousands) | Three months ended June 30, |  | Six months ended June 30,
2016 |  | 2015 |  | 2016 | 2015
Service cost | $ | — |  |  | $ | 63 |  |  | $ | — |  | $ | 118 |
Interest cost | 48 |  |  | (1,118 | ) |  | 97 |  | 91 |
Expected return on plan assets | — |  |  | 1,561 |  |  | — |  | — |
Recognized net actuarial loss | 37 |  |  | 388 |  |  | 73 |  | 758 |
Benefit cost | $ | 85 |  |  | $ | 894 |  |  | $ | 170 |  | $ | 967 |
| Post-retirement Benefits
(in thousands) | Three months ended June 30, |  | Six months ended June 30,
2016 |  | 2015 |  | 2016 | 2015
Service cost | $ | 167 |  |  | $ | 210 |  |  | $ | 380 |  | $ | 450 |
Interest cost | 370 |  |  | 386 |  |  | 775 |  | 792 |
Amortization of prior service cost | (89 | ) |  | (136 | ) |  | (177 | ) | (272 | )
Recognized net actuarial loss | 149 |  |  | 367 |  |  | 384 |  | 759 |
Benefit cost | $ | 597 |  |  | $ | 827 |  |  | $ | 1,362 |  | $ | 1,729 |

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