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Retirement Plans - Components of Net Periodic Pension Expense (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Retirement Benefits [Abstract]      
Interest cost $ 392 $ 378 $ 484
Expected return on plan assets $ (732) (574) (748)
Net amortization and deferral   $ 240 $ 289
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Noninterest Expense Other Noninterest Expense Other Noninterest Expense
Net periodic pension cost (benefit) $ (340) $ 44 $ 25
Total pension cost (benefit) (340) 44 25
Net loss (gain) recognized in other comprehensive income (736) (854) 986
Total recognized in net periodic benefit cost and other comprehensive loss (before tax) $ (1,076) $ (810) $ 1,011