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Schedule of Expected Future Benefit Payments (Detail) $ in Thousands | Dec. 31, 2017 USD ($)
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United States Pension Plans, Defined Benefit |
Defined Benefit Plan Disclosure |
2018 | $ 19,387
2019 | 19,022
2020 | 19,688
2021 | 20,246
2022 | 20,994
2023-2027 | 110,214
Foreign Pension Plans, Defined Benefit |
Defined Benefit Plan Disclosure |
2018 | 886
2019 | 887
2020 | 1,253
2021 | 1,002
2022 | 952
2023-2027 | 6,294
Postretirement Benefit Plans |
Defined Benefit Plan Disclosure |
2018 | 591
2019 | 597
2020 | 535
2021 | 502
2022 | 439
2023-2027 | $ 1,665

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