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Components of Net Periodic Benefit (Income) Cost (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Oct. 07, 2017 | Oct. 08, 2016 | Oct. 07, 2017 | Oct. 08, 2016
Pension plans |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost | $ 174 | $ 192 | $ 581 | $ 639
Interest cost | 2,779 | 3,140 | 9,792 | 10,557
Expected return on plan assets | (5,437) | (6,325) | (19,191) | (20,394)
Settlement loss | 3,030 | 1,832 | 3,030 | 6,473
Amortization of prior service cost (credit) | 83 | 96 | 291 | 291
Amortization of net (gain) loss | 1,365 | 2,175 | 4,792 | 5,128
Total net periodic pension cost (income) | 1,994 | 1,110 | (705) | 2,694
Post-retirement Benefit Plan |  |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |  |
Service cost | 59 | 93 | 197 | 308
Interest cost | 52 | 71 | 174 | 237
Amortization of prior service cost (credit) | (49) | (49) | (163) | (163)
Amortization of net (gain) loss | (114) | (105) | (383) | (349)
Total net periodic pension cost (income) | $ (52) | $ 10 | $ (175) | $ 33

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- Definition Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan. + 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)(4) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of prior service cost (credit) recognized in net periodic benefit cost (credit) of defined benefit plan. + 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)(5) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan. + 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)(3) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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