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Pension and Postretirement Benefits | 6 Months Ended
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Jun. 26, 2016
Pension and Postretirement Benefits (Thousands of Dollars) [Abstract] |
Pension and Postretirement Benefits | (7) Pension and Postretirement Benefits The components of the net periodic cost of the Company's defined benefit pension and other postretirement plans for the quarter and six-month periods ended June 26, 2016 and June 28, 2015 are as follows:
| Quarter Ended
| Pension |  | Postretirement
| June 26, |  | June 28, |  | June 26, |  | June 28,
| 2016 |  | 2015 |  | 2016 |  | 2015
Service cost | $ | 995 |  |  | 1,021 |  |  | 133 |  |  | 150
Interest cost |  | 4,604 |  |  | 4,619 |  |  | 293 |  |  | 285
Expected return on assets |  | (5,504) |  |  | (5,497) |  |  | - |  |  | -
Net amortization and deferrals |  | 2,132 |  |  | 2,207 |  |  | - |  |  | (114)
Curtailment |  | - |  |  | 138 |  |  | - |  |  | -
Net periodic benefit cost | $ | 2,227 |  |  | 2,488 |  |  | 426 |  |  | 321
| Six Months Ended
| Pension |  | Postretirement
| June 26, |  | June 28, |  | June 26, |  | June 28,
| 2016 |  | 2015 |  | 2016 |  | 2015
Service cost | $ | 1,993 |  |  | 2,032 |  |  | 265 |  |  | 300
Interest cost |  | 9,210 |  |  | 9,224 |  |  | 587 |  |  | 570
Expected return on assets |  | (11,011) |  |  | (10,976) |  |  | - |  |  | -
Net amortization and deferrals |  | 4,264 |  |  | 4,408 |  |  | - |  |  | (228)
Curtailment |  | - |  |  | 138 |  |  | - |  |  | -
Net periodic benefit cost | $ | 4,456 |  |  | 4,826 |  |  | 852 |  |  | 642
During the six months ended June 26, 2016, the Company made cash contributions to its defined benefit pension plans of approximately $750 in the aggregate. The Company expects to contribute approximately $2,750 during the remainder of fiscal 2016.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=49170332&loc=SL14450702-114947 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e2410-114920 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39675-114964 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6414199&loc=d3e39622-114963 + Details
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