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Retirement Plans and Other Post-Retirement Benefits - Components of Amounts Recognized as Accumulated Other Comprehensive Income (Detail) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Pension Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Prior service credit (cost) $ (172) $ (226)
Net actuarial gain (loss) (14,189) (15,612)
Other Benefits    
Defined Benefit Plan Disclosure [Line Items]    
Prior service credit (cost) (125) 108
Net actuarial gain (loss) $ (382) $ (350)