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Pension and Other Post-Retirement Benefit Plans | 3 Months Ended
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Mar. 28, 2015
Compensation and Retirement Disclosure [Abstract] |
PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS | PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS The following table provides the components of net periodic cost (benefit) for the Company’s pension and other post-retirement benefit plans:
| Pension Plans |  | Other Post-Retirement Benefit Plans
| March 28, 2015 |  | March 29, 2014 |  | March 28, 2015 |  | March 29, 2014
| (in thousands)
Service cost | $ | 935 |  |  | $ | 842 |  |  | $ | 214 |  |  | $ | 189 |
Interest cost | 3,070 |  |  | 3,211 |  |  | 265 |  |  | 252 |
Expected return on plan assets | (4,382 | ) |  | (4,278 | ) |  | — |  |  | — |
Amortization of prior service cost (credit) | (151 | ) |  | (159 | ) |  | — |  |  | 165 |
Amortization of net loss | 812 |  |  | 223 |  |  | 68 |  |  | 63 |
Net periodic cost (benefit) | $ | 284 |  |  | $ | (161 | ) |  | $ | 547 |  |  | $ | 669 |

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