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Employee Benefit Plans (Tables) | 9 Months Ended
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Sep. 29, 2018
Retirement Benefits [Abstract] |
Net pension cost | Net pension cost for the three and nine months ended September 29, 2018 and September 30, 2017 includes the following components (in thousands):
| Pension Benefits |  | Pension Benefits
| Three Months Ended |  | Nine Months Ended
| September 29, 2018 | September 30, 2017 |  | September 29, 2018 | September 30, 2017
Service cost | $ | 762 |  | $ | 759 |  |  | $ | 2,340 |  | $ | 2,244 |
Interest cost | 1,603 |  | 1,672 |  |  | 4,844 |  | 5,020 |
Expected return on plan assets | (2,053 | ) | (1,799 | ) |  | (6,176 | ) | (5,377 | )
Amortization of prior service cost | 9 |  | 9 |  |  | 26 |  | 27 |
Amortization of net loss | 888 |  | 1,204 |  |  | 2,664 |  | 3,610 |
Net pension cost | $ | 1,209 |  | $ | 1,845 |  |  | $ | 3,698 |  | $ | 5,524 |

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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=112275985&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=108410482&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=108410482&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=108410482&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=108410482&loc=d3e2417-114920 + Details
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