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Employee Benefit Plans (Tables) | 9 Months Ended
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Oct. 03, 2021
Retirement Benefits [Abstract] |
Components of net periodic benefit cost | The components of net periodic benefit cost include the following:
|  | Three Months Ended |  | Nine Months Ended
|  | October 3, 2021 |  | September 27, 2020 |  | October 3, 2021 |  | September 27, 2020
Retirement Plans |  |  |  |  |  |  |  |
Service cost |  | $ | 968 |  |  | $ | 881 |  |  | $ | 2,949 |  |  | $ | 2,966 |
Interest cost |  | 2,287 |  |  | 12,785 |  |  | 22,051 |  |  | 38,015 |
Expected return on plan assets |  | (3,361) |  |  | (12,427) |  |  | (21,672) |  |  | (37,234) |
Amortization of prior service cost |  | 226 |  |  | 245 |  |  | 687 |  |  | 742 |
Amortization of net actuarial loss |  | 1,600 |  |  | 7,136 |  |  | 14,849 |  |  | 21,270 |
Effect of curtailment loss |  | — |  |  | — |  |  | — |  |  | 31 |
Effect of settlement loss |  | 21 |  |  | — |  |  | 547,652 |  |  | 661 |
Net periodic benefit cost |  | $ | 1,741 |  |  | $ | 8,620 |  |  | $ | 566,516 |  |  | $ | 26,451 |
Retiree Health and Life Insurance Plans |  |  |  |
Service cost |  | $ | 93 |  |  | $ | 89 |  |  | $ | 282 |  |  | $ | 265 |
Interest cost |  | 49 |  |  | 84 |  |  | 149 |  |  | 249 |
Expected return on plan assets |  | (111) |  |  | (92) |  |  | (335) |  |  | (275) |
Amortization of prior service credit |  | — |  |  | (70) |  |  | — |  |  | (207) |
Amortization of net actuarial gain |  | (186) |  |  | (208) |  |  | (563) |  |  | (620) |
Net periodic benefit income |  | $ | (155) |  |  | $ | (197) |  |  | $ | (467) |  |  | $ | (588) |

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 + Details
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