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Pension and Other Postretirement Obligations | 3 Months Ended
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Mar. 29, 2020
Retirement Benefits [Abstract] |
Pension and Other Postretirement Obligations | Pension and Other Postretirement Obligations The following table provides the components of net periodic benefit costs for our pension and other postretirement benefit plans:
|  | Pension Obligations |  |  |  | Other Postretirement Obligations |  |
|  | March 29, 2020 |  | March 31, 2019 |  | March 29, 2020 |  | March 31, 2019
|  | (In thousands) |  |  |  |  |  |
Three Months Ended |  |  |  |  |  |  |  |
Service cost |  | $ | 932 |  |  | $ | 1,007 |  |  | $ | 8 |  |  | $ | 10 |
Interest cost |  | 2,337 |  |  | 2,960 |  |  | 202 |  |  | 272 |
Expected return on plan assets |  | (3,940) |  |  | (4,116) |  |  | — |  |  | — |
Amortization of prior service cost (credit) |  | 44 |  |  | (14) |  |  | — |  |  | — |
Actuarial losses (gains) |  | 677 |  |  | 321 |  |  | (19) |  |  | (26) |
Net periodic benefit cost |  | $ | 50 |  |  | $ | 158 |  |  | $ | 191 |  |  | $ | 256 |

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