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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] |
2020 | $ 6,547
2021 | 6,444
2022 | 6,360
2023 | 6,262
2024 | 6,235
2025 – 2029 | 29,592
Total 10-year estimated future benefit payments | $ 61,440

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