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Net Periodic Pension Benefit (Tables) | 9 Months Ended
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Oct. 02, 2021
Retirement Benefits [Abstract] |
Schedule of Net Periodic Pension Cost for Pension Plans | The following table shows the components of our net periodic pension benefit:
|  | Three Months Ended |  | Nine Months Ended
Pension-related items |  | October 2, 2021 |  | September 26, 2020 |  | October 2, 2021 |  | September 26, 2020
|  | (In thousands) |  | (In thousands)
Service cost (1) |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Interest cost on projected benefit obligation |  | 505 |  |  | 723 |  |  | 1,515 |  |  | 2,169 |
Expected return on plan assets |  | (1,140) |  |  | (1,210) |  |  | (3,420) |  |  | (3,630) |
Amortization of unrecognized gain |  | 321 |  |  | 263 |  |  | 963 |  |  | 789 |
Net periodic pension benefit |  | $ | (314) |  |  | $ | (224) |  |  | $ | (942) |  |  | $ | (672) |
(1) Service cost is not a part of our net periodic pension benefit as our pension plan is frozen for all participants.

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- Definition Tabular disclosure of one or more of the entity's defined benefit pension plans or one or more other defined benefit postretirement plans, separately for pension plans and other postretirement benefit plans including the entity's schedule of fair value of plan assets for defined benefit or other postretirement plans. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2439-114920 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2410-114920 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=123447040&loc=d3e2417-114920 + Details
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