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Pension and Postretirement Benefits (Tables) | 6 Months Ended
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Jul. 01, 2018
Pension and Postretirement Benefits (Thousands of Dollars) [Abstract] |
Components of net periodic cost |
| Quarter Ended
| Pension |  | Postretirement
| July 1, |  | July 2, |  | July 1, |  | July 2,
| 2018 |  | 2017 |  | 2018 |  | 2017
Service cost | $ | 667 |  |  | 921 |  |  | 189 |  |  | 173
Interest cost |  | 3,980 |  |  | 4,430 |  |  | 293 |  |  | 295
Expected return on assets |  | (5,174) |  |  | (5,880) |  |  | - |  |  | -
Net amortization and deferrals |  | 2,965 |  |  | 2,519 |  |  | 43 |  |  | -
Net periodic benefit cost | $ | 2,438 |  |  | 1,990 |  |  | 525 |  |  | 468
| Six Months Ended
| Pension |  | Postretirement
| July 1, |  | July 2, |  | July 1, |  | July 2,
| 2018 |  | 2017 |  | 2018 |  | 2017
Service cost | $ | 1,352 |  |  | 1,873 |  |  | 377 |  |  | 345
Interest cost |  | 7,996 |  |  | 9,155 |  |  | 585 |  |  | 590
Expected return on assets |  | (10,379) |  |  | (12,161) |  |  | - |  |  | -
Net amortization and deferrals |  | 5,942 |  |  | 5,213 |  |  | 85 |  |  | -
Net periodic benefit cost | $ | 4,911 |  |  | 4,080 |  |  | 1,047 |  |  | 935

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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