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Pension Plans - Aggregate Benefits Expected to be Paid Out of Plan Assets (Detail) $ in Thousands	Dec. 31, 2019 USD ($)
Compensation And Retirement Disclosure [Abstract]
2020	$ 1,225
2021	1,292
2022	1,382
2023	1,469
2024	1,566
2025-2029	$ 9,077

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Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year.

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