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Schedule of Amounts Recognized in Accumulated Other Comprehensive Income (loss) (Detail) - Postretirement Benefit Plans - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Defined Benefit Plan Disclosure |  |
Prior service cost, before tax | $ (23) | $ (31)
Deferred taxes | (1,691) | (1,689)
Total recognized in other comprehensive income (loss), net of tax | $ (1,714) | $ (1,720)

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