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Schedule of Net Periodic Pension and Postretirement benefit Cost (Income) (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Apr. 01, 2018 | Apr. 02, 2017
United States Pension Plans, Defined Benefit |  |
Defined Benefit Plan Disclosure |  |
Service cost | $ 571 | $ 560
Interest cost | 2,997 | 3,312
Expected return on plan assets | (3,369) | (3,000)
Amortization of prior service cost | 14 | 18
Total | 213 | 890
Foreign Pension Plans, Defined Benefit |  |
Defined Benefit Plan Disclosure |  |
Service cost | 213 | 185
Interest cost | 186 | 163
Expected return on plan assets | (5) | (6)
Total | 394 | 342
Postretirement Benefit Plans |  |
Defined Benefit Plan Disclosure |  |
Service cost | 9 | 10
Interest cost | 50 | 50
Amortization of prior service credit | (93) | (124)
Special termination benefits | 1,626 |
Total | $ 1,592 | $ (64)

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- Definition Amount included in accumulated other comprehensive (income) loss for prior service cost (credit) expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position. + References No definition available. + 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 cost of providing special or contractual termination benefits payable from 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 (q) -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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