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Pension and Other Post-Retirement Benefit Plans Employee Benefits (Tables) | 6 Months Ended
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Jul. 01, 2017
Retirement Benefits [Abstract] |
Schedule of Net Periodic Cost | The following table provides the components of net periodic cost for the Company’s pension, deferred compensation and executive supplemental life insurance retirement plans:
| Three Months Ended |  | Six Months Ended
| July 1, 2017 |  | June 25, 2016 |  | July 1, 2017 |  | June 25, 2016
| (in thousands)
Service cost | $ | 774 |  |  | $ | 639 |  |  | $ | 1,528 |  |  | $ | 1,193 |
Interest cost | 2,939 |  |  | 3,220 |  |  | 5,765 |  |  | 6,584 |
Expected return on plan assets | (3,485 | ) |  | (3,998 | ) |  | (6,935 | ) |  | (7,990 | )
Amortization of prior service credit | (139 | ) |  | (144 | ) |  | (258 | ) |  | (288 | )
Amortization of net loss | 1,047 |  |  | 545 |  |  | 2,013 |  |  | 1,091 |
Net periodic cost | $ | 1,136 |  |  | $ | 262 |  |  | $ | 2,113 |  |  | $ | 590 |

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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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