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Employee Benefits (Tables) | 9 Months Ended
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Oct. 03, 2015
Employee Benefits |
Schedule of net periodic benefit cost of plans |
|  | Three Months Ended |  | Nine Months Ended |
|  | October 3, |  | September 27, |  | October 3, |  | September 27, |
(Thousands of dollars) |  | 2015 |  | 2014 |  | 2015 |  | 2014 |
Components of net periodic benefit cost: |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost |  | $ | 2,500 |  | $ | 1,924 |  | $ | 7,442 |  | $ | 5,784 |
Interest cost |  |  | 2,592 |  |  | 2,404 |  |  | 7,729 |  |  | 7,225 |
Expected return on plan assets |  |  | (2,179) |  |  | (2,173) |  |  | (6,467) |  |  | (6,537) |
Amortization and other |  |  | 1,379 |  |  | 524 |  |  | 3,505 |  |  | 1,575 |
Net periodic benefit cost |  | $ | 4,292 |  | $ | 2,679 |  | $ | 12,209 |  | $ | 8,047 |

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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=58740216&loc=d3e1928-114920 + Details
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