Pension and Employee Benefit Plans - Components of Pension and Employee Benefit Expenses (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net periodic benefit cost (gain)	$ 107	$ (105)
Health Care Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Interest cost	318	219
Expected return on plan assets	285	390
Amortization of net actuarial loss	$ (74)	$ (66)