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Pension and Other Postretirement Obligations | 3 Months Ended
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Apr. 04, 2021
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
Three Months Ended |  | April 4, 2021 |  | March 29, 2020 |  | April 4, 2021 |  | March 29, 2020
|  | (In thousands)
Service cost |  | $ | 886 |  |  | $ | 932 |  |  | $ | 9 |  |  | $ | 8 |
Interest cost |  | 1,806 |  |  | 2,337 |  |  | 177 |  |  | 202 |
Expected return on plan assets |  | (3,668) |  |  | (3,940) |  |  | — |  |  | — |
Amortization of prior service cost |  | 28 |  |  | 44 |  |  | — |  |  | — |
Actuarial losses (gains) |  | 979 |  |  | 677 |  |  | (6) |  |  | (19) |
Net periodic benefit cost |  | $ | 31 |  |  | $ | 50 |  |  | $ | 180 |  |  | $ | 191 |

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