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Retirement Plans - Schedule of Amounts Recognized in Accumulated Other Comprehensive Income (Detail) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Net (gain) loss | $ (575) | $ (461) | $ (243)
Transition obligation | 305 | 364 | 424
Total | (270) | $ (97) | $ 181
Postretirement Benefit Costs [Member] |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |
Net (gain) loss | (96) |  |
Transition obligation | 76 |  |
Total | $ (20) |  |

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