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Pension and Employee Benefit Plans - Components of Pension and Employee Benefit Expenses (Detail) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2024
Mar. 31, 2023
Pension Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Net periodic benefit cost (gain) $ 57 $ 107
Health Care Plan [Member]    
Defined Benefit Plan Disclosure [Line Items]    
Interest cost 304 318
Expected return on plan assets (304) (285)
Amortization of net actuarial loss $ 57 $ 74