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Pension and Other Post-Retirement Benefit Plans | 9 Months Ended
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Sep. 30, 2017
Retirement Benefits [Abstract] |
PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS | PENSION AND OTHER POST-RETIREMENT BENEFIT PLANS 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 |  | Nine Months Ended
| September 30, 2017 |  | September 24, 2016 |  | September 30, 2017 |  | September 24, 2016
| (in thousands)
Service cost | $ | 749 |  |  | $ | 655 |  |  | $ | 2,277 |  |  | $ | 1,848 |
Interest cost | 2,663 |  |  | 2,773 |  |  | 8,428 |  |  | 9,357 |
Expected return on plan assets | (3,476 | ) |  | (3,038 | ) |  | (10,411 | ) |  | (11,028 | )
Amortization of prior service credit | (134 | ) |  | (142 | ) |  | (392 | ) |  | (430 | )
Amortization of net loss | 1,017 |  |  | 503 |  |  | 3,030 |  |  | 1,594 |
Settlements | — |  |  | 788 |  |  | — |  |  | 788 |
Net periodic cost | $ | 819 |  |  | $ | 1,539 |  |  | $ | 2,932 |  |  | $ | 2,129 |
The net periodic cost for the Company’s post-retirement benefit plan for the three and nine months ended September 30, 2017 and September 24, 2016 was not significant.

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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 -URI http://asc.fasb.org/topic&trid=2235017 + Details
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