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Schedule of Expected Benefit Payments (Detail) - Pension Plans, Defined Benefit $ in Thousands | Dec. 31, 2018 USD ($)
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Schedule of Pension Expected Future Benefit Payments [Line Items] |
2019 | $ 6,314
2020 | 6,286
2021 | 6,251
2022 | 6,222
2023 | 6,199
2024 – 2028 | 31,307
Total 10-year estimated future benefit payments | $ 62,579

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