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Schedule of Defined Benefit Pension and Postretirement Benefit Plan Assets and Obligation (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Jul. 02, 2017 | Dec. 31, 2016 | Oct. 02, 2016 | Jul. 03, 2016 | Apr. 03, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Defined Benefit Plan Disclosure |  |  |  |  |  |  |  |  |
Actuarial loss | $ (3,800) | $ (2,500) | $ (2,000) | $ 700 | $ (700) | $ (1,200) |  |  |
Ending Balance | 325,800 |  |  |  |  |  | $ 325,800 |  |
United States Pension Plans, Defined Benefit |  |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure |  |  |  |  |  |  |  |  |
Projected benefit obligation, Beginning of year |  |  |  |  |  | 351,117 | 353,616 | $ 351,117 |
Service cost |  |  |  |  |  |  | 2,239 | 2,302 | $ 2,462
Interest cost |  |  |  |  |  |  | 13,151 | 13,630 | 13,142
Actuarial loss |  |  |  |  |  |  | 12,702 | 6,053 |
Benefits paid |  |  |  |  |  |  | (18,682) | (19,486) |
Projected benefit obligation, End of year | 363,026 |  | 353,616 |  |  |  | 363,026 | 353,616 | 351,117
Beginning Balance |  |  |  |  |  | 298,404 | 307,304 | 298,404 |
Company contributions |  |  |  |  |  |  | 4,462 | 4,489 |
Actual return on plan assets |  |  |  |  |  |  | 31,422 | 23,897 |
Benefits paid |  |  |  |  |  |  | (18,682) | (19,486) |
Ending Balance | 324,506 |  | 307,304 |  |  |  | 324,506 | 307,304 | 298,404
Funded status | (38,520) |  | (46,312) |  |  |  | (38,520) | (46,312) |
Foreign Pension Plans, Defined Benefit |  |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure |  |  |  |  |  |  |  |  |
Projected benefit obligation, Beginning of year |  |  |  |  |  | 62,290 | 60,738 | 62,290 |
Service cost |  |  |  |  |  |  | 818 | 761 | 1,006
Interest cost |  |  |  |  |  |  | 852 | 1,185 | 1,444
Actuarial loss |  |  |  |  |  |  | 262 | 5,621 |
Benefits paid |  |  |  |  |  |  | (994) | (1,385) |
Settlements |  |  |  |  |  |  | (28,560) |  |
Expenses paid |  |  |  |  |  |  | (40) | (609) |
Non-U.S. currency movement |  |  |  |  |  |  | 6,277 | (7,125) |
Projected benefit obligation, End of year | 39,353 |  | 60,738 |  |  |  | 39,353 | 60,738 | 62,290
Beginning Balance |  |  |  |  |  | 28,141 | 27,571 | 28,141 |
Company contributions |  |  |  |  |  |  | 883 | 867 |
Actual return on plan assets |  |  |  |  |  |  | 737 | 5,142 |
Benefits paid |  |  |  |  |  |  | (994) | (1,148) |
Settlements |  |  |  |  |  |  | (28,560) |  |
Expenses paid |  |  |  |  |  |  | (40) | (609) |
Non-U.S. currency movement |  |  |  |  |  |  | 1,710 | (4,822) |
Ending Balance | 1,307 |  | 27,571 |  |  |  | 1,307 | 27,571 | 28,141
Funded status | (38,046) |  | (33,167) |  |  |  | (38,046) | (33,167) |
Postretirement Benefit Plans |  |  |  |  |  |  |  |  |
Defined Benefit Plan Disclosure |  |  |  |  |  |  |  |  |
Projected benefit obligation, Beginning of year |  |  |  |  |  | $ 6,030 | 5,510 | 6,030 |
Service cost |  |  |  |  |  |  | 34 | 37 | 48
Interest cost |  |  |  |  |  |  | 201 | 218 | 237
Actuarial loss |  |  |  |  |  |  | 398 | 5 |
Special termination benefits |  |  |  |  |  |  | 591 |  |
Benefits paid |  |  |  |  |  |  | (557) | (687) |
Plan amendments |  |  |  |  |  |  |  | (93) |
Projected benefit obligation, End of year | 6,177 |  | 5,510 |  |  |  | 6,177 | 5,510 | $ 6,030
Company contributions |  |  |  |  |  |  | 557 | 687 |
Benefits paid |  |  |  |  |  |  | (557) | (687) |
Funded status | $ (6,177) |  | $ (5,510) |  |  |  | $ (6,177) | $ (5,510) |

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- Definition Amount of increase (decrease) in plan assets of defined benefit plan from actual return (loss) determined by change in fair value of plan assets adjusted for contributions, benefit payments, and other expenses. + 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 (b)(1) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of gain (loss) from change in actuarial assumptions which (increases) decreases benefit obligation of defined benefit plan. Assumptions include, but are not limited to, interest, mortality, employee turnover, salary, and temporary deviation from substantive 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 (a)(4) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of payment to participant of defined benefit plan which decreases benefit obligation. For pension plan, payment includes, but is not limited to, pension benefits and death benefits. For other postretirement plan, payment includes, but is not limited to, prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 60 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6414203&loc=d3e39716-114964 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(6) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of payment, which decreases benefit obligation of defined benefit plan, for irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Transaction constituting settlement includes, but is not limited to, making lump-sum cash payment to participant in exchange for their rights to receive specified benefits and purchasing nonparticipating annuity contract. Excludes decreases to benefit obligation for remeasurement due to settlement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 15 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7577095&loc=d3e8001-114927 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 + Details
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- Definition Amount of funded (unfunded) status of defined benefit plan, measured as difference between fair value of plan assets and benefit obligation. Includes, but is not limited to, overfunded (underfunded) status. + 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 (c) -URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919 + Details
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